Home / 87,638.68-131,493.72-40,862.80

Finding the Fourth Proportional to 87,638.68, 131,493.72 and 40,862.80

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Solution

The fourth proportional to 87,638.68, 131,493.72 and 40,862.80 is: 61,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,638.68 : 131,493.72 = 40,862.80 : x
  2. Step 2: Convert to fraction form
    87,638.68/131,493.72 = 40,862.80/x
  3. Step 3: Cross multiply
    87,638.68x = 131,493.72 × 40,862.80
  4. Step 4: Simplify right side
    87,638.68x = 5,373,201,581.62
  5. Step 5: Solve for x
    x = 5,373,201,581.62/87,638.68
  6. Step 6: Final answer
    x = 61,310.85

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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.