Home / 87,959.20-131,959.30-28,791.28

Finding the Fourth Proportional to 87,959.20, 131,959.30 and 28,791.28

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Solution

The fourth proportional to 87,959.20, 131,959.30 and 28,791.28 is: 43,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,959.20 : 131,959.30 = 28,791.28 : x
  2. Step 2: Convert to fraction form
    87,959.20/131,959.30 = 28,791.28/x
  3. Step 3: Cross multiply
    87,959.20x = 131,959.30 × 28,791.28
  4. Step 4: Simplify right side
    87,959.20x = 3,799,277,154.90
  5. Step 5: Solve for x
    x = 3,799,277,154.90/87,959.20
  6. Step 6: Final answer
    x = 43,193.63

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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.