Greatest Common Factor of 47/30, 74/10, 31/78, 90/70

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

GCF of 47/30, 74/10, 31/78, 90/70

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

GCF of:

Greatest Common Factor of 47/30,74/10,31/78,90/70

Given fractions are 47/30,74/10,31/78,90/70

Formula to find GCF of Fractions is

GCF = GCF of Numerators/LCM of Denominators

As per the formula GCF of Fractions let’s split into two parts and find the GCF of Numerators and LCM of Denominators

In the given fractions GCF of Numerators means GCF of 47,74,31,90

Greatest Common Factor of Numerators i.e. GCF of 47,74,31,90 is 1 .

LCM of Denominators means LCM of 30,10,78,70 as per the given fractions.

LCM of 30,10,78,70 is 2730 as it is the smallest common factor for both these numbers.

Lets's calculate GCF of 47,74,31,90

GCF of Fractions 47/30,74/10,31/78,90/70 is 1/2730

∴ So GCF of numbers is 1 because of no common factors present between them.

Greatest Common Factor of 47,74,31,90 By Matching Biggest Common Factor Method

Greatest Common Factor of 47,74,31,90 By Matching Biggest Common Factor Method

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 74

List of positive integer factors of 74 that divides 74 without a remainder.

1,2,37,74

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 47,74,31,90 . The biggest common factor number is the GCF number.
So the greatest common factor 47,74,31,90 is 1.

Lets's calculate LCM of 30,10,78,70

2 30, 10, 78, 70
3 15, 5, 39, 35
5 5, 5, 13, 35
1, 1, 13, 7

∴ So the LCM of the given numbers is 2 x 3 x 5 x 1 x 1 x 13 x 7 = 2730

Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/2730

Therefore, the GCF of Fractions 47/30,74/10,31/78,90/70 is 1/2730

Least Common Multiple of 30,10,78,70 with GCF Formula

Least Common Multiple of 30,10,78,70 with GCF Formula

The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 30,10,78,70 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(30,10,78,70) = 2

common factors(in case of two or more numbers have common factors) = 300

GCF(30,10,78,70) x common factors =2 x 300 = 600

LCM(30,10,78,70) = ( 30 × 10 × 78 × 70 ) / 600

LCM(30,10,78,70) = 1638000 / 600

LCM(30,10,78,70) = 2730


GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

GCF of Fractions Calculation Examples

Here are some samples of GCF of Fractions calculations.

Frequently Asked Questions on Fractional GCF of 47/30, 74/10, 31/78, 90/70

1. How to find GCF in Fractions?

Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.

2. What is the GCF of Fractions for 47/30, 74/10, 31/78, 90/70?

Answer: GCF of Numerators as per given numbers 47/30, 74/10, 31/78, 90/70 is

GCF of Numerators i.e. for 47,74,31,90 is 1

LCM of denominators i.e. for 30,10,78,70 is 2730.

Thus, GCF of Fractions is 1/2730.Finally, GCF of Fractions for 47/30, 74/10, 31/78, 90/70 is 1/2730.