Finding the Fourth Proportional to 87,694.24, 131,560.84 and 40,921.60
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Solution
The fourth proportional to 87,694.24, 131,560.84 and 40,921.60 is: 61,391.49
Step by Step Solution
- Step 1: Write the proportion equation
87,694.24 : 131,560.84 = 40,921.60 : x - Step 2: Convert to fraction form
87,694.24/131,560.84 = 40,921.60/x - Step 3: Cross multiply
87,694.24x = 131,560.84 × 40,921.60 - Step 4: Simplify right side
87,694.24x = 5,383,680,070.14 - Step 5: Solve for x
x = 5,383,680,070.14/87,694.24 - Step 6: Final answer
x = 61,391.49
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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.