Home / 80,291.25-120,453.21-27,693.90

Finding the Fourth Proportional to 80,291.25, 120,453.21 and 27,693.90

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Solution

The fourth proportional to 80,291.25, 120,453.21 and 27,693.90 is: 41,546.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,291.25 : 120,453.21 = 27,693.90 : x
  2. Step 2: Convert to fraction form
    80,291.25/120,453.21 = 27,693.90/x
  3. Step 3: Cross multiply
    80,291.25x = 120,453.21 × 27,693.90
  4. Step 4: Simplify right side
    80,291.25x = 3,335,819,152.42
  5. Step 5: Solve for x
    x = 3,335,819,152.42/80,291.25
  6. Step 6: Final answer
    x = 41,546.48

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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.