Home / 80,531,572.80-120,797,359.20-72,028,516.80

Finding the Fourth Proportional to 80,531,572.80, 120,797,359.20 and 72,028,516.80

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Solution

The fourth proportional to 80,531,572.80, 120,797,359.20 and 72,028,516.80 is: 108,042,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531,572.80 : 120,797,359.20 = 72,028,516.80 : x
  2. Step 2: Convert to fraction form
    80,531,572.80/120,797,359.20 = 72,028,516.80/x
  3. Step 3: Cross multiply
    80,531,572.80x = 120,797,359.20 × 72,028,516.80
  4. Step 4: Simplify right side
    80,531,572.80x = 8,700,854,616,532,834
  5. Step 5: Solve for x
    x = 8,700,854,616,532,834/80,531,572.80
  6. Step 6: Final answer
    x = 108,042,775.20

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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.