Home / 80,780.11-121,199.33-41,355.79

Finding the Fourth Proportional to 80,780.11, 121,199.33 and 41,355.79

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Solution

The fourth proportional to 80,780.11, 121,199.33 and 41,355.79 is: 62,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.11 : 121,199.33 = 41,355.79 : x
  2. Step 2: Convert to fraction form
    80,780.11/121,199.33 = 41,355.79/x
  3. Step 3: Cross multiply
    80,780.11x = 121,199.33 × 41,355.79
  4. Step 4: Simplify right side
    80,780.11x = 5,012,294,039.62
  5. Step 5: Solve for x
    x = 5,012,294,039.62/80,780.11
  6. Step 6: Final answer
    x = 62,048.62

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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.