Home / 80,310.28-120,484.56-27,720.24

Finding the Fourth Proportional to 80,310.28, 120,484.56 and 27,720.24

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Solution

The fourth proportional to 80,310.28, 120,484.56 and 27,720.24 is: 41,586.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,310.28 : 120,484.56 = 27,720.24 : x
  2. Step 2: Convert to fraction form
    80,310.28/120,484.56 = 27,720.24/x
  3. Step 3: Cross multiply
    80,310.28x = 120,484.56 × 27,720.24
  4. Step 4: Simplify right side
    80,310.28x = 3,339,860,919.49
  5. Step 5: Solve for x
    x = 3,339,860,919.49/80,310.28
  6. Step 6: Final answer
    x = 41,586.97

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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.