Finding the Fourth Proportional to 71,686.09, 107,542.14 and 29,542.75
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Solution
The fourth proportional to 71,686.09, 107,542.14 and 29,542.75 is: 44,319.48
Step by Step Solution
- Step 1: Write the proportion equation
71,686.09 : 107,542.14 = 29,542.75 : x - Step 2: Convert to fraction form
71,686.09/107,542.14 = 29,542.75/x - Step 3: Cross multiply
71,686.09x = 107,542.14 × 29,542.75 - Step 4: Simplify right side
71,686.09x = 3,177,090,556.49 - Step 5: Solve for x
x = 3,177,090,556.49/71,686.09 - Step 6: Final answer
x = 44,319.48
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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.