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Finding the Fourth Proportional to 83,211.20, 124,816.80 and 41,652.80

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Solution

The fourth proportional to 83,211.20, 124,816.80 and 41,652.80 is: 62,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,211.20 : 124,816.80 = 41,652.80 : x
  2. Step 2: Convert to fraction form
    83,211.20/124,816.80 = 41,652.80/x
  3. Step 3: Cross multiply
    83,211.20x = 124,816.80 × 41,652.80
  4. Step 4: Simplify right side
    83,211.20x = 5,198,969,207.04
  5. Step 5: Solve for x
    x = 5,198,969,207.04/83,211.20
  6. Step 6: Final answer
    x = 62,479.20

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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.