Finding the Fourth Proportional to 71,691.36, 107,534.61 and 27,316.53
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Solution
The fourth proportional to 71,691.36, 107,534.61 and 27,316.53 is: 40,973.87
Step by Step Solution
- Step 1: Write the proportion equation
71,691.36 : 107,534.61 = 27,316.53 : x - Step 2: Convert to fraction form
71,691.36/107,534.61 = 27,316.53/x - Step 3: Cross multiply
71,691.36x = 107,534.61 × 27,316.53 - Step 4: Simplify right side
71,691.36x = 2,937,472,400.10 - Step 5: Solve for x
x = 2,937,472,400.10/71,691.36 - Step 6: Final answer
x = 40,973.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.