Home / 80,642,789.20-120,979,930.20-32,112,384.40

Finding the Fourth Proportional to 80,642,789.20, 120,979,930.20 and 32,112,384.40

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Solution

The fourth proportional to 80,642,789.20, 120,979,930.20 and 32,112,384.40 is: 48,174,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,642,789.20 : 120,979,930.20 = 32,112,384.40 : x
  2. Step 2: Convert to fraction form
    80,642,789.20/120,979,930.20 = 32,112,384.40/x
  3. Step 3: Cross multiply
    80,642,789.20x = 120,979,930.20 × 32,112,384.40
  4. Step 4: Simplify right side
    80,642,789.20x = 3,884,954,023,267,569
  5. Step 5: Solve for x
    x = 3,884,954,023,267,569/80,642,789.20
  6. Step 6: Final answer
    x = 48,174,846.90

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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.