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Finding the Fourth Proportional to 61,052.39, 84,253.14 and 39,819.47

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Solution

The fourth proportional to 61,052.39, 84,253.14 and 39,819.47 is: 54,951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,052.39 : 84,253.14 = 39,819.47 : x
  2. Step 2: Convert to fraction form
    61,052.39/84,253.14 = 39,819.47/x
  3. Step 3: Cross multiply
    61,052.39x = 84,253.14 × 39,819.47
  4. Step 4: Simplify right side
    61,052.39x = 3,354,915,380.64
  5. Step 5: Solve for x
    x = 3,354,915,380.64/61,052.39
  6. Step 6: Final answer
    x = 54,951.42

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1.5x scale

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.