Home / 87,908.10-131,862.15-28,745.70

Finding the Fourth Proportional to 87,908.10, 131,862.15 and 28,745.70

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Solution

The fourth proportional to 87,908.10, 131,862.15 and 28,745.70 is: 43,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,908.10 : 131,862.15 = 28,745.70 : x
  2. Step 2: Convert to fraction form
    87,908.10/131,862.15 = 28,745.70/x
  3. Step 3: Cross multiply
    87,908.10x = 131,862.15 × 28,745.70
  4. Step 4: Simplify right side
    87,908.10x = 3,790,469,805.26
  5. Step 5: Solve for x
    x = 3,790,469,805.26/87,908.10
  6. Step 6: Final answer
    x = 43,118.55

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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.