Home / 83,500.85-125,250.20-20,321.07

Finding the Fourth Proportional to 83,500.85, 125,250.20 and 20,321.07

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Solution

The fourth proportional to 83,500.85, 125,250.20 and 20,321.07 is: 30,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,500.85 : 125,250.20 = 20,321.07 : x
  2. Step 2: Convert to fraction form
    83,500.85/125,250.20 = 20,321.07/x
  3. Step 3: Cross multiply
    83,500.85x = 125,250.20 × 20,321.07
  4. Step 4: Simplify right side
    83,500.85x = 2,545,218,132.52
  5. Step 5: Solve for x
    x = 2,545,218,132.52/83,500.85
  6. Step 6: Final answer
    x = 30,481.35

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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.