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Finding the Fourth Proportional to 81,044.64, 111,841.74 and 45,234.64

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Solution

The fourth proportional to 81,044.64, 111,841.74 and 45,234.64 is: 62,423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044.64 : 111,841.74 = 45,234.64 : x
  2. Step 2: Convert to fraction form
    81,044.64/111,841.74 = 45,234.64/x
  3. Step 3: Cross multiply
    81,044.64x = 111,841.74 × 45,234.64
  4. Step 4: Simplify right side
    81,044.64x = 5,059,120,845.87
  5. Step 5: Solve for x
    x = 5,059,120,845.87/81,044.64
  6. Step 6: Final answer
    x = 62,423.88

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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.