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Finding the Fourth Proportional to 80,640.88, 120,998.04 and 41,177.68

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Solution

The fourth proportional to 80,640.88, 120,998.04 and 41,177.68 is: 61,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.88 : 120,998.04 = 41,177.68 : x
  2. Step 2: Convert to fraction form
    80,640.88/120,998.04 = 41,177.68/x
  3. Step 3: Cross multiply
    80,640.88x = 120,998.04 × 41,177.68
  4. Step 4: Simplify right side
    80,640.88x = 4,982,418,571.75
  5. Step 5: Solve for x
    x = 4,982,418,571.75/80,640.88
  6. Step 6: Final answer
    x = 61,785.27

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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.