Home / 80,454,846.90-120,682,270.35-72,392,690.10

Finding the Fourth Proportional to 80,454,846.90, 120,682,270.35 and 72,392,690.10

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Solution

The fourth proportional to 80,454,846.90, 120,682,270.35 and 72,392,690.10 is: 108,589,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,846.90 : 120,682,270.35 = 72,392,690.10 : x
  2. Step 2: Convert to fraction form
    80,454,846.90/120,682,270.35 = 72,392,690.10/x
  3. Step 3: Cross multiply
    80,454,846.90x = 120,682,270.35 × 72,392,690.10
  4. Step 4: Simplify right side
    80,454,846.90x = 8,736,514,198,011,967
  5. Step 5: Solve for x
    x = 8,736,514,198,011,967/80,454,846.90
  6. Step 6: Final answer
    x = 108,589,035.15

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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.