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Finding the Fourth Proportional to 83,251.80, 124,885.90 and 30,648.98

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Solution

The fourth proportional to 83,251.80, 124,885.90 and 30,648.98 is: 45,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,251.80 : 124,885.90 = 30,648.98 : x
  2. Step 2: Convert to fraction form
    83,251.80/124,885.90 = 30,648.98/x
  3. Step 3: Cross multiply
    83,251.80x = 124,885.90 × 30,648.98
  4. Step 4: Simplify right side
    83,251.80x = 3,827,625,801.91
  5. Step 5: Solve for x
    x = 3,827,625,801.91/83,251.80
  6. Step 6: Final answer
    x = 45,976.49

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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.