Home / 80,661.28-120,902.22-60,875.68

Finding the Fourth Proportional to 80,661.28, 120,902.22 and 60,875.68

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Solution

The fourth proportional to 80,661.28, 120,902.22 and 60,875.68 is: 91,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,661.28 : 120,902.22 = 60,875.68 : x
  2. Step 2: Convert to fraction form
    80,661.28/120,902.22 = 60,875.68/x
  3. Step 3: Cross multiply
    80,661.28x = 120,902.22 × 60,875.68
  4. Step 4: Simplify right side
    80,661.28x = 7,360,004,856.01
  5. Step 5: Solve for x
    x = 7,360,004,856.01/80,661.28
  6. Step 6: Final answer
    x = 91,245.82

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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.