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Finding the Fourth Proportional to 83,447.32, 125,169.84 and 20,267.92

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Solution

The fourth proportional to 83,447.32, 125,169.84 and 20,267.92 is: 30,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,447.32 : 125,169.84 = 20,267.92 : x
  2. Step 2: Convert to fraction form
    83,447.32/125,169.84 = 20,267.92/x
  3. Step 3: Cross multiply
    83,447.32x = 125,169.84 × 20,267.92
  4. Step 4: Simplify right side
    83,447.32x = 2,536,932,303.53
  5. Step 5: Solve for x
    x = 2,536,932,303.53/83,447.32
  6. Step 6: Final answer
    x = 30,401.60

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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.