Home / 87,420.70-131,229.60-57,896.20

Finding the Fourth Proportional to 87,420.70, 131,229.60 and 57,896.20

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Solution

The fourth proportional to 87,420.70, 131,229.60 and 57,896.20 is: 86,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.70 : 131,229.60 = 57,896.20 : x
  2. Step 2: Convert to fraction form
    87,420.70/131,229.60 = 57,896.20/x
  3. Step 3: Cross multiply
    87,420.70x = 131,229.60 × 57,896.20
  4. Step 4: Simplify right side
    87,420.70x = 7,597,695,167.52
  5. Step 5: Solve for x
    x = 7,597,695,167.52/87,420.70
  6. Step 6: Final answer
    x = 86,909.57

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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.