Home / 87,391.28-131,087.16-57,803.60

Finding the Fourth Proportional to 87,391.28, 131,087.16 and 57,803.60

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Solution

The fourth proportional to 87,391.28, 131,087.16 and 57,803.60 is: 86,705.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,391.28 : 131,087.16 = 57,803.60 : x
  2. Step 2: Convert to fraction form
    87,391.28/131,087.16 = 57,803.60/x
  3. Step 3: Cross multiply
    87,391.28x = 131,087.16 × 57,803.60
  4. Step 4: Simplify right side
    87,391.28x = 7,577,309,761.78
  5. Step 5: Solve for x
    x = 7,577,309,761.78/87,391.28
  6. Step 6: Final answer
    x = 86,705.56

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1.5x scale

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.