Home / 71,680.20-107,520.48-21,760.68

Finding the Fourth Proportional to 71,680.20, 107,520.48 and 21,760.68

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Solution

The fourth proportional to 71,680.20, 107,520.48 and 21,760.68 is: 32,641.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.20 : 107,520.48 = 21,760.68 : x
  2. Step 2: Convert to fraction form
    71,680.20/107,520.48 = 21,760.68/x
  3. Step 3: Cross multiply
    71,680.20x = 107,520.48 × 21,760.68
  4. Step 4: Simplify right side
    71,680.20x = 2,339,718,758.73
  5. Step 5: Solve for x
    x = 2,339,718,758.73/71,680.20
  6. Step 6: Final answer
    x = 32,641.07

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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.