What is 72.3166... as a Fraction?

72.316 equals 433960 as a fraction.

How do you turn 72.316 repeating into a fraction?

Detailed Answer:

Step 1: To convert 72.316 repeating into a fraction, begin writing this simple equation:

n = 72.316 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (6) and 2 digits in the non-repeating part (31). Multiply both sides by 10³ = 1000.

1000 × n = 72316.6 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

1000 × n = 72316.6
 100 × n = 72.316
 900 × n = 65085

65085900 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 15 (the GCF - greatest common factor).

n = 65085900 = 65085 ÷ 15900 ÷ 15 = 433960. So,

72.316 = 433960 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 433960 is also equal to 721960 when expressed as a mixed number.

The repeating decimal 72.316 (vinculum notation) has a repeated block length of 1. It is also represented as 72.31666... (ellipsis notation) which equals approximately 72.3166666 (decimal approximation)(*).

The recurring decimal 72.316 can be written as a ratio of two integers having 4339 as the numerator and 60 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.