Home / 80,850.52-121,270.16-30,239.92

Finding the Fourth Proportional to 80,850.52, 121,270.16 and 30,239.92

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Solution

The fourth proportional to 80,850.52, 121,270.16 and 30,239.92 is: 45,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,850.52 : 121,270.16 = 30,239.92 : x
  2. Step 2: Convert to fraction form
    80,850.52/121,270.16 = 30,239.92/x
  3. Step 3: Cross multiply
    80,850.52x = 121,270.16 × 30,239.92
  4. Step 4: Simplify right side
    80,850.52x = 3,667,199,936.79
  5. Step 5: Solve for x
    x = 3,667,199,936.79/80,850.52
  6. Step 6: Final answer
    x = 45,357.78

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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.