Home / 71,120,005.20-106,684,673.40-20,003,691.60

Finding the Fourth Proportional to 71,120,005.20, 106,684,673.40 and 20,003,691.60

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Solution

The fourth proportional to 71,120,005.20, 106,684,673.40 and 20,003,691.60 is: 30,006,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120,005.20 : 106,684,673.40 = 20,003,691.60 : x
  2. Step 2: Convert to fraction form
    71,120,005.20/106,684,673.40 = 20,003,691.60/x
  3. Step 3: Cross multiply
    71,120,005.20x = 106,684,673.40 × 20,003,691.60
  4. Step 4: Simplify right side
    71,120,005.20x = 2,134,087,305,140,323.75
  5. Step 5: Solve for x
    x = 2,134,087,305,140,323.75/71,120,005.20
  6. Step 6: Final answer
    x = 30,006,849.68

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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.