Home / 80,490.20-120,814.76-60,429.92

Finding the Fourth Proportional to 80,490.20, 120,814.76 and 60,429.92

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Solution

The fourth proportional to 80,490.20, 120,814.76 and 60,429.92 is: 90,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.20 : 120,814.76 = 60,429.92 : x
  2. Step 2: Convert to fraction form
    80,490.20/120,814.76 = 60,429.92/x
  3. Step 3: Cross multiply
    80,490.20x = 120,814.76 × 60,429.92
  4. Step 4: Simplify right side
    80,490.20x = 7,300,826,281.62
  5. Step 5: Solve for x
    x = 7,300,826,281.62/80,490.20
  6. Step 6: Final answer
    x = 90,704.54

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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.