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Finding the Fourth Proportional to 81,508.64, 122,160.72 and 44,067.20

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Solution

The fourth proportional to 81,508.64, 122,160.72 and 44,067.20 is: 66,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,508.64 : 122,160.72 = 44,067.20 : x
  2. Step 2: Convert to fraction form
    81,508.64/122,160.72 = 44,067.20/x
  3. Step 3: Cross multiply
    81,508.64x = 122,160.72 × 44,067.20
  4. Step 4: Simplify right side
    81,508.64x = 5,383,280,880.38
  5. Step 5: Solve for x
    x = 5,383,280,880.38/81,508.64
  6. Step 6: Final answer
    x = 66,045.52

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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.