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Finding the Fourth Proportional to 83,512.98, 125,209.98 and 39,115.44

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Solution

The fourth proportional to 83,512.98, 125,209.98 and 39,115.44 is: 58,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,512.98 : 125,209.98 = 39,115.44 : x
  2. Step 2: Convert to fraction form
    83,512.98/125,209.98 = 39,115.44/x
  3. Step 3: Cross multiply
    83,512.98x = 125,209.98 × 39,115.44
  4. Step 4: Simplify right side
    83,512.98x = 4,897,643,460.09
  5. Step 5: Solve for x
    x = 4,897,643,460.09/83,512.98
  6. Step 6: Final answer
    x = 58,645.30

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1.5x scale

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.