Home / 80,496,005.20-120,744,007.80-60,340,613.20

Finding the Fourth Proportional to 80,496,005.20, 120,744,007.80 and 60,340,613.20

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Solution

The fourth proportional to 80,496,005.20, 120,744,007.80 and 60,340,613.20 is: 90,510,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,496,005.20 : 120,744,007.80 = 60,340,613.20 : x
  2. Step 2: Convert to fraction form
    80,496,005.20/120,744,007.80 = 60,340,613.20/x
  3. Step 3: Cross multiply
    80,496,005.20x = 120,744,007.80 × 60,340,613.20
  4. Step 4: Simplify right side
    80,496,005.20x = 7,285,767,470,877,583
  5. Step 5: Solve for x
    x = 7,285,767,470,877,583/80,496,005.20
  6. Step 6: Final answer
    x = 90,510,919.80

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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.