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Finding the Fourth Proportional to 62,731.44, 86,532.84 and 40,375.44

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Solution

The fourth proportional to 62,731.44, 86,532.84 and 40,375.44 is: 55,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,731.44 : 86,532.84 = 40,375.44 : x
  2. Step 2: Convert to fraction form
    62,731.44/86,532.84 = 40,375.44/x
  3. Step 3: Cross multiply
    62,731.44x = 86,532.84 × 40,375.44
  4. Step 4: Simplify right side
    62,731.44x = 3,493,801,489.45
  5. Step 5: Solve for x
    x = 3,493,801,489.45/62,731.44
  6. Step 6: Final answer
    x = 55,694.58

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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.