Home / 90,878.17-125,414.66-49,487.90

Finding the Fourth Proportional to 90,878.17, 125,414.66 and 49,487.90

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Solution

The fourth proportional to 90,878.17, 125,414.66 and 49,487.90 is: 68,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,878.17 : 125,414.66 = 49,487.90 : x
  2. Step 2: Convert to fraction form
    90,878.17/125,414.66 = 49,487.90/x
  3. Step 3: Cross multiply
    90,878.17x = 125,414.66 × 49,487.90
  4. Step 4: Simplify right side
    90,878.17x = 6,206,508,152.61
  5. Step 5: Solve for x
    x = 6,206,508,152.61/90,878.17
  6. Step 6: Final answer
    x = 68,294.82

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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.