Home / 81,340.38-121,997.97-22,180.86

Finding the Fourth Proportional to 81,340.38, 121,997.97 and 22,180.86

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Solution

The fourth proportional to 81,340.38, 121,997.97 and 22,180.86 is: 33,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,340.38 : 121,997.97 = 22,180.86 : x
  2. Step 2: Convert to fraction form
    81,340.38/121,997.97 = 22,180.86/x
  3. Step 3: Cross multiply
    81,340.38x = 121,997.97 × 22,180.86
  4. Step 4: Simplify right side
    81,340.38x = 2,706,019,892.85
  5. Step 5: Solve for x
    x = 2,706,019,892.85/81,340.38
  6. Step 6: Final answer
    x = 33,267.85

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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.