Home / 80,462.43-120,499.38-40,355.28

Finding the Fourth Proportional to 80,462.43, 120,499.38 and 40,355.28

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Solution

The fourth proportional to 80,462.43, 120,499.38 and 40,355.28 is: 60,435.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,462.43 : 120,499.38 = 40,355.28 : x
  2. Step 2: Convert to fraction form
    80,462.43/120,499.38 = 40,355.28/x
  3. Step 3: Cross multiply
    80,462.43x = 120,499.38 × 40,355.28
  4. Step 4: Simplify right side
    80,462.43x = 4,862,786,219.73
  5. Step 5: Solve for x
    x = 4,862,786,219.73/80,462.43
  6. Step 6: Final answer
    x = 60,435.49

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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.