Home / 81,642.20-122,349.24-44,121.38

Finding the Fourth Proportional to 81,642.20, 122,349.24 and 44,121.38

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Solution

The fourth proportional to 81,642.20, 122,349.24 and 44,121.38 is: 66,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,642.20 : 122,349.24 = 44,121.38 : x
  2. Step 2: Convert to fraction form
    81,642.20/122,349.24 = 44,121.38/x
  3. Step 3: Cross multiply
    81,642.20x = 122,349.24 × 44,121.38
  4. Step 4: Simplify right side
    81,642.20x = 5,398,217,310.75
  5. Step 5: Solve for x
    x = 5,398,217,310.75/81,642.20
  6. Step 6: Final answer
    x = 66,120.43

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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.