Home / 80,776.78-121,184.33-25,372.78

Finding the Fourth Proportional to 80,776.78, 121,184.33 and 25,372.78

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Solution

The fourth proportional to 80,776.78, 121,184.33 and 25,372.78 is: 38,065.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776.78 : 121,184.33 = 25,372.78 : x
  2. Step 2: Convert to fraction form
    80,776.78/121,184.33 = 25,372.78/x
  3. Step 3: Cross multiply
    80,776.78x = 121,184.33 × 25,372.78
  4. Step 4: Simplify right side
    80,776.78x = 3,074,783,344.54
  5. Step 5: Solve for x
    x = 3,074,783,344.54/80,776.78
  6. Step 6: Final answer
    x = 38,065.19

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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.