Home / 80,454,836.15-120,682,254.23-72,392,679.35

Finding the Fourth Proportional to 80,454,836.15, 120,682,254.23 and 72,392,679.35

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Solution

The fourth proportional to 80,454,836.15, 120,682,254.23 and 72,392,679.35 is: 108,589,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,836.15 : 120,682,254.23 = 72,392,679.35 : x
  2. Step 2: Convert to fraction form
    80,454,836.15/120,682,254.23 = 72,392,679.35/x
  3. Step 3: Cross multiply
    80,454,836.15x = 120,682,254.23 × 72,392,679.35
  4. Step 4: Simplify right side
    80,454,836.15x = 8,736,511,733,707,571
  5. Step 5: Solve for x
    x = 8,736,511,733,707,571/80,454,836.15
  6. Step 6: Final answer
    x = 108,589,019.03

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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.