Home / 80,531.48-120,782.10-27,930.20

Finding the Fourth Proportional to 80,531.48, 120,782.10 and 27,930.20

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Solution

The fourth proportional to 80,531.48, 120,782.10 and 27,930.20 is: 41,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.48 : 120,782.10 = 27,930.20 : x
  2. Step 2: Convert to fraction form
    80,531.48/120,782.10 = 27,930.20/x
  3. Step 3: Cross multiply
    80,531.48x = 120,782.10 × 27,930.20
  4. Step 4: Simplify right side
    80,531.48x = 3,373,468,209.42
  5. Step 5: Solve for x
    x = 3,373,468,209.42/80,531.48
  6. Step 6: Final answer
    x = 41,890.06

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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.