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Finding the Fourth Proportional to 80,754.60, 121,137.30 and 27,445.80

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Solution

The fourth proportional to 80,754.60, 121,137.30 and 27,445.80 is: 41,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,754.60 : 121,137.30 = 27,445.80 : x
  2. Step 2: Convert to fraction form
    80,754.60/121,137.30 = 27,445.80/x
  3. Step 3: Cross multiply
    80,754.60x = 121,137.30 × 27,445.80
  4. Step 4: Simplify right side
    80,754.60x = 3,324,710,108.34
  5. Step 5: Solve for x
    x = 3,324,710,108.34/80,754.60
  6. Step 6: Final answer
    x = 41,170.54

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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.