Home / 80,906.41-121,315.65-36,481.15

Finding the Fourth Proportional to 80,906.41, 121,315.65 and 36,481.15

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Solution

The fourth proportional to 80,906.41, 121,315.65 and 36,481.15 is: 54,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906.41 : 121,315.65 = 36,481.15 : x
  2. Step 2: Convert to fraction form
    80,906.41/121,315.65 = 36,481.15/x
  3. Step 3: Cross multiply
    80,906.41x = 121,315.65 × 36,481.15
  4. Step 4: Simplify right side
    80,906.41x = 4,425,734,425.00
  5. Step 5: Solve for x
    x = 4,425,734,425.00/80,906.41
  6. Step 6: Final answer
    x = 54,701.90

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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.