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Finding the Fourth Proportional to 80,489.88, 120,707.48 and 27,887.09

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Solution

The fourth proportional to 80,489.88, 120,707.48 and 27,887.09 is: 41,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,489.88 : 120,707.48 = 27,887.09 : x
  2. Step 2: Convert to fraction form
    80,489.88/120,707.48 = 27,887.09/x
  3. Step 3: Cross multiply
    80,489.88x = 120,707.48 × 27,887.09
  4. Step 4: Simplify right side
    80,489.88x = 3,366,180,358.43
  5. Step 5: Solve for x
    x = 3,366,180,358.43/80,489.88
  6. Step 6: Final answer
    x = 41,821.16

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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.