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Finding the Fourth Proportional to 83,700.44, 125,550.88 and 20,520.84

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Solution

The fourth proportional to 83,700.44, 125,550.88 and 20,520.84 is: 30,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,700.44 : 125,550.88 = 20,520.84 : x
  2. Step 2: Convert to fraction form
    83,700.44/125,550.88 = 20,520.84/x
  3. Step 3: Cross multiply
    83,700.44x = 125,550.88 × 20,520.84
  4. Step 4: Simplify right side
    83,700.44x = 2,576,409,469.04
  5. Step 5: Solve for x
    x = 2,576,409,469.04/83,700.44
  6. Step 6: Final answer
    x = 30,781.32

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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.