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Finding the Fourth Proportional to 80,308.28, 120,481.56 and 27,718.22

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Solution

The fourth proportional to 80,308.28, 120,481.56 and 27,718.22 is: 41,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,308.28 : 120,481.56 = 27,718.22 : x
  2. Step 2: Convert to fraction form
    80,308.28/120,481.56 = 27,718.22/x
  3. Step 3: Cross multiply
    80,308.28x = 120,481.56 × 27,718.22
  4. Step 4: Simplify right side
    80,308.28x = 3,339,534,386.02
  5. Step 5: Solve for x
    x = 3,339,534,386.02/80,308.28
  6. Step 6: Final answer
    x = 41,583.94

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1.5x scale

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.