Finding the Fourth Proportional to 87,642.92, 131,542.50 and 40,922.12
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Solution
The fourth proportional to 87,642.92, 131,542.50 and 40,922.12 is: 61,419.66
Step by Step Solution
- Step 1: Write the proportion equation
87,642.92 : 131,542.50 = 40,922.12 : x - Step 2: Convert to fraction form
87,642.92/131,542.50 = 40,922.12/x - Step 3: Cross multiply
87,642.92x = 131,542.50 × 40,922.12 - Step 4: Simplify right side
87,642.92x = 5,382,997,970.10 - Step 5: Solve for x
x = 5,382,997,970.10/87,642.92 - Step 6: Final answer
x = 61,419.66
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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.