Home / 87,513.12-131,255.28-28,391.04

Finding the Fourth Proportional to 87,513.12, 131,255.28 and 28,391.04

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Solution

The fourth proportional to 87,513.12, 131,255.28 and 28,391.04 is: 42,581.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,513.12 : 131,255.28 = 28,391.04 : x
  2. Step 2: Convert to fraction form
    87,513.12/131,255.28 = 28,391.04/x
  3. Step 3: Cross multiply
    87,513.12x = 131,255.28 × 28,391.04
  4. Step 4: Simplify right side
    87,513.12x = 3,726,473,904.69
  5. Step 5: Solve for x
    x = 3,726,473,904.69/87,513.12
  6. Step 6: Final answer
    x = 42,581.89

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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.