Home / 81,049.82-121,573.17-36,645.55

Finding the Fourth Proportional to 81,049.82, 121,573.17 and 36,645.55

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Solution

The fourth proportional to 81,049.82, 121,573.17 and 36,645.55 is: 54,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.82 : 121,573.17 = 36,645.55 : x
  2. Step 2: Convert to fraction form
    81,049.82/121,573.17 = 36,645.55/x
  3. Step 3: Cross multiply
    81,049.82x = 121,573.17 × 36,645.55
  4. Step 4: Simplify right side
    81,049.82x = 4,455,115,375.96
  5. Step 5: Solve for x
    x = 4,455,115,375.96/81,049.82
  6. Step 6: Final answer
    x = 54,967.62

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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.