Home / 80,329.28-120,378.49-45,194.72

Finding the Fourth Proportional to 80,329.28, 120,378.49 and 45,194.72

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Solution

The fourth proportional to 80,329.28, 120,378.49 and 45,194.72 is: 67,727.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,329.28 : 120,378.49 = 45,194.72 : x
  2. Step 2: Convert to fraction form
    80,329.28/120,378.49 = 45,194.72/x
  3. Step 3: Cross multiply
    80,329.28x = 120,378.49 × 45,194.72
  4. Step 4: Simplify right side
    80,329.28x = 5,440,471,434.69
  5. Step 5: Solve for x
    x = 5,440,471,434.69/80,329.28
  6. Step 6: Final answer
    x = 67,727.13

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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.