Home / 80,517,688.40-120,776,532.60-19,933,414.40

Finding the Fourth Proportional to 80,517,688.40, 120,776,532.60 and 19,933,414.40

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Solution

The fourth proportional to 80,517,688.40, 120,776,532.60 and 19,933,414.40 is: 29,900,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,517,688.40 : 120,776,532.60 = 19,933,414.40 : x
  2. Step 2: Convert to fraction form
    80,517,688.40/120,776,532.60 = 19,933,414.40/x
  3. Step 3: Cross multiply
    80,517,688.40x = 120,776,532.60 × 19,933,414.40
  4. Step 4: Simplify right side
    80,517,688.40x = 2,407,488,674,110,909
  5. Step 5: Solve for x
    x = 2,407,488,674,110,909/80,517,688.40
  6. Step 6: Final answer
    x = 29,900,121.60

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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.