Finding the Fourth Proportional to 86,175.19, 129,193.05 and 38,755.55
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Solution
The fourth proportional to 86,175.19, 129,193.05 and 38,755.55 is: 58,101.96
Step by Step Solution
- Step 1: Write the proportion equation
86,175.19 : 129,193.05 = 38,755.55 : x - Step 2: Convert to fraction form
86,175.19/129,193.05 = 38,755.55/x - Step 3: Cross multiply
86,175.19x = 129,193.05 × 38,755.55 - Step 4: Simplify right side
86,175.19x = 5,006,947,708.93 - Step 5: Solve for x
x = 5,006,947,708.93/86,175.19 - Step 6: Final answer
x = 58,101.96
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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.