Finding the Fourth Proportional to 102,684.97, 141,646.11 and 61,820.65
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Solution
The fourth proportional to 102,684.97, 141,646.11 and 61,820.65 is: 85,276.89
Step by Step Solution
- Step 1: Write the proportion equation
102,684.97 : 141,646.11 = 61,820.65 : x - Step 2: Convert to fraction form
102,684.97/141,646.11 = 61,820.65/x - Step 3: Cross multiply
102,684.97x = 141,646.11 × 61,820.65 - Step 4: Simplify right side
102,684.97x = 8,756,654,590.17 - Step 5: Solve for x
x = 8,756,654,590.17/102,684.97 - Step 6: Final answer
x = 85,276.89
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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.