Finding the Fourth Proportional to 99,841.68, 137,781.84 and 54,520.08
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Solution
The fourth proportional to 99,841.68, 137,781.84 and 54,520.08 is: 75,237.89
Step by Step Solution
- Step 1: Write the proportion equation
99,841.68 : 137,781.84 = 54,520.08 : x - Step 2: Convert to fraction form
99,841.68/137,781.84 = 54,520.08/x - Step 3: Cross multiply
99,841.68x = 137,781.84 × 54,520.08 - Step 4: Simplify right side
99,841.68x = 7,511,876,939.35 - Step 5: Solve for x
x = 7,511,876,939.35/99,841.68 - Step 6: Final answer
x = 75,237.89
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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.