Finding the Fourth Proportional to 77,729.05, 107,268.14 and 43,738.74
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Solution
The fourth proportional to 77,729.05, 107,268.14 and 43,738.74 is: 60,360.62
Step by Step Solution
- Step 1: Write the proportion equation
77,729.05 : 107,268.14 = 43,738.74 : x - Step 2: Convert to fraction form
77,729.05/107,268.14 = 43,738.74/x - Step 3: Cross multiply
77,729.05x = 107,268.14 × 43,738.74 - Step 4: Simplify right side
77,729.05x = 4,691,773,395.09 - Step 5: Solve for x
x = 4,691,773,395.09/77,729.05 - Step 6: Final answer
x = 60,360.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.