What is 31.9333... as a Fraction?

31.93 equals 47915 as a fraction.

How do you turn 31.93 repeating into a fraction?

Detailed Answer:

Step 1: To convert 31.93 repeating into a fraction, begin writing this simple equation:

n = 31.93 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (3) and 1 digit in the non-repeating part (9). Multiply both sides by 10² = 100.

100 × n = 3193.3 (equation 2)

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

100 × n = 3193.3
 10 × n = 31.93
 90 × n = 2874

287490 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 6 (the GCF - greatest common factor).

n = 287490 = 2874 ÷ 690 ÷ 6 = 47915. So,

31.93 = 47915 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 47915 is also equal to 311415 when expressed as a mixed number.

The repeating decimal 31.93 (vinculum notation) has a repeated block length of 1. It is also represented as 31.9333... (ellipsis notation) which equals approximately 31.933333 (decimal approximation)(*).

The recurring decimal 31.93 can be written as a ratio of two integers having 479 as the numerator and 15 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.