Home / 80,643,856.80-120,965,785.20-26,791,168.80

Finding the Fourth Proportional to 80,643,856.80, 120,965,785.20 and 26,791,168.80

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Solution

The fourth proportional to 80,643,856.80, 120,965,785.20 and 26,791,168.80 is: 40,186,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,856.80 : 120,965,785.20 = 26,791,168.80 : x
  2. Step 2: Convert to fraction form
    80,643,856.80/120,965,785.20 = 26,791,168.80/x
  3. Step 3: Cross multiply
    80,643,856.80x = 120,965,785.20 × 26,791,168.80
  4. Step 4: Simplify right side
    80,643,856.80x = 3,240,814,770,317,742
  5. Step 5: Solve for x
    x = 3,240,814,770,317,742/80,643,856.80
  6. Step 6: Final answer
    x = 40,186,753.20

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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.