Home / 80,902.85-121,371.79-30,982.95

Finding the Fourth Proportional to 80,902.85, 121,371.79 and 30,982.95

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Solution

The fourth proportional to 80,902.85, 121,371.79 and 30,982.95 is: 46,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.85 : 121,371.79 = 30,982.95 : x
  2. Step 2: Convert to fraction form
    80,902.85/121,371.79 = 30,982.95/x
  3. Step 3: Cross multiply
    80,902.85x = 121,371.79 × 30,982.95
  4. Step 4: Simplify right side
    80,902.85x = 3,760,456,100.98
  5. Step 5: Solve for x
    x = 3,760,456,100.98/80,902.85
  6. Step 6: Final answer
    x = 46,481.13

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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.