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Finding the Fourth Proportional to 80,884.70, 121,330.65 and 27,575.90

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Solution

The fourth proportional to 80,884.70, 121,330.65 and 27,575.90 is: 41,365.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,884.70 : 121,330.65 = 27,575.90 : x
  2. Step 2: Convert to fraction form
    80,884.70/121,330.65 = 27,575.90/x
  3. Step 3: Cross multiply
    80,884.70x = 121,330.65 × 27,575.90
  4. Step 4: Simplify right side
    80,884.70x = 3,345,801,871.34
  5. Step 5: Solve for x
    x = 3,345,801,871.34/80,884.70
  6. Step 6: Final answer
    x = 41,365.08

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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.