Home / 87,507.89-131,331.89-45,400.04

Finding the Fourth Proportional to 87,507.89, 131,331.89 and 45,400.04

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Solution

The fourth proportional to 87,507.89, 131,331.89 and 45,400.04 is: 68,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,507.89 : 131,331.89 = 45,400.04 : x
  2. Step 2: Convert to fraction form
    87,507.89/131,331.89 = 45,400.04/x
  3. Step 3: Cross multiply
    87,507.89x = 131,331.89 × 45,400.04
  4. Step 4: Simplify right side
    87,507.89x = 5,962,472,516.12
  5. Step 5: Solve for x
    x = 5,962,472,516.12/87,507.89
  6. Step 6: Final answer
    x = 68,136.40

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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.