Home / 80,582.20-120,873.28-30,650.76

Finding the Fourth Proportional to 80,582.20, 120,873.28 and 30,650.76

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Solution

The fourth proportional to 80,582.20, 120,873.28 and 30,650.76 is: 45,976.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,582.20 : 120,873.28 = 30,650.76 : x
  2. Step 2: Convert to fraction form
    80,582.20/120,873.28 = 30,650.76/x
  3. Step 3: Cross multiply
    80,582.20x = 120,873.28 × 30,650.76
  4. Step 4: Simplify right side
    80,582.20x = 3,704,857,895.69
  5. Step 5: Solve for x
    x = 3,704,857,895.69/80,582.20
  6. Step 6: Final answer
    x = 45,976.13

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1.5x scale

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.