Home / 87,874.92-121,255.20-49,620.24

Finding the Fourth Proportional to 87,874.92, 121,255.20 and 49,620.24

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Solution

The fourth proportional to 87,874.92, 121,255.20 and 49,620.24 is: 68,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.92 : 121,255.20 = 49,620.24 : x
  2. Step 2: Convert to fraction form
    87,874.92/121,255.20 = 49,620.24/x
  3. Step 3: Cross multiply
    87,874.92x = 121,255.20 × 49,620.24
  4. Step 4: Simplify right side
    87,874.92x = 6,016,712,125.25
  5. Step 5: Solve for x
    x = 6,016,712,125.25/87,874.92
  6. Step 6: Final answer
    x = 68,469.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.