Home / 87,632.70-131,449.05-56,139.90

Finding the Fourth Proportional to 87,632.70, 131,449.05 and 56,139.90

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Solution

The fourth proportional to 87,632.70, 131,449.05 and 56,139.90 is: 84,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,632.70 : 131,449.05 = 56,139.90 : x
  2. Step 2: Convert to fraction form
    87,632.70/131,449.05 = 56,139.90/x
  3. Step 3: Cross multiply
    87,632.70x = 131,449.05 × 56,139.90
  4. Step 4: Simplify right side
    87,632.70x = 7,379,536,522.10
  5. Step 5: Solve for x
    x = 7,379,536,522.10/87,632.70
  6. Step 6: Final answer
    x = 84,209.85

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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.