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Finding the Fourth Proportional to 80,642.28, 120,887.88 and 27,296.94

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Solution

The fourth proportional to 80,642.28, 120,887.88 and 27,296.94 is: 40,919.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,642.28 : 120,887.88 = 27,296.94 : x
  2. Step 2: Convert to fraction form
    80,642.28/120,887.88 = 27,296.94/x
  3. Step 3: Cross multiply
    80,642.28x = 120,887.88 × 27,296.94
  4. Step 4: Simplify right side
    80,642.28x = 3,299,869,207.09
  5. Step 5: Solve for x
    x = 3,299,869,207.09/80,642.28
  6. Step 6: Final answer
    x = 40,919.84

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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.