Home / 80,744,471.20-120,972,364.80-49,137,947.20

Finding the Fourth Proportional to 80,744,471.20, 120,972,364.80 and 49,137,947.20

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Solution

The fourth proportional to 80,744,471.20, 120,972,364.80 and 49,137,947.20 is: 73,619,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,744,471.20 : 120,972,364.80 = 49,137,947.20 : x
  2. Step 2: Convert to fraction form
    80,744,471.20/120,972,364.80 = 49,137,947.20/x
  3. Step 3: Cross multiply
    80,744,471.20x = 120,972,364.80 × 49,137,947.20
  4. Step 4: Simplify right side
    80,744,471.20x = 5,944,333,674,201,539
  5. Step 5: Solve for x
    x = 5,944,333,674,201,539/80,744,471.20
  6. Step 6: Final answer
    x = 73,619,079.87

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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.