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Finding the Fourth Proportional to 83,238.97, 124,819.65 and 43,247.21

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Solution

The fourth proportional to 83,238.97, 124,819.65 and 43,247.21 is: 64,850.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,238.97 : 124,819.65 = 43,247.21 : x
  2. Step 2: Convert to fraction form
    83,238.97/124,819.65 = 43,247.21/x
  3. Step 3: Cross multiply
    83,238.97x = 124,819.65 × 43,247.21
  4. Step 4: Simplify right side
    83,238.97x = 5,398,101,087.39
  5. Step 5: Solve for x
    x = 5,398,101,087.39/83,238.97
  6. Step 6: Final answer
    x = 64,850.64

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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.