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Finding the Fourth Proportional to 83,998.80, 125,825.40 and 42,469.20

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Solution

The fourth proportional to 83,998.80, 125,825.40 and 42,469.20 is: 63,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.80 : 125,825.40 = 42,469.20 : x
  2. Step 2: Convert to fraction form
    83,998.80/125,825.40 = 42,469.20/x
  3. Step 3: Cross multiply
    83,998.80x = 125,825.40 × 42,469.20
  4. Step 4: Simplify right side
    83,998.80x = 5,343,704,077.68
  5. Step 5: Solve for x
    x = 5,343,704,077.68/83,998.80
  6. Step 6: Final answer
    x = 63,616.43

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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.