Finding the Fourth Proportional to 77,854.10, 107,442.59 and 47,629.96
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Solution
The fourth proportional to 77,854.10, 107,442.59 and 47,629.96 is: 65,731.75
Step by Step Solution
- Step 1: Write the proportion equation
77,854.10 : 107,442.59 = 47,629.96 : x - Step 2: Convert to fraction form
77,854.10/107,442.59 = 47,629.96/x - Step 3: Cross multiply
77,854.10x = 107,442.59 × 47,629.96 - Step 4: Simplify right side
77,854.10x = 5,117,485,757.24 - Step 5: Solve for x
x = 5,117,485,757.24/77,854.10 - Step 6: Final answer
x = 65,731.75
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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.