Home / 87,529.10-131,390.85-54,286.70

Finding the Fourth Proportional to 87,529.10, 131,390.85 and 54,286.70

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Solution

The fourth proportional to 87,529.10, 131,390.85 and 54,286.70 is: 81,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,529.10 : 131,390.85 = 54,286.70 : x
  2. Step 2: Convert to fraction form
    87,529.10/131,390.85 = 54,286.70/x
  3. Step 3: Cross multiply
    87,529.10x = 131,390.85 × 54,286.70
  4. Step 4: Simplify right side
    87,529.10x = 7,132,775,656.70
  5. Step 5: Solve for x
    x = 7,132,775,656.70/87,529.10
  6. Step 6: Final answer
    x = 81,490.33

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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.