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Finding the Fourth Proportional to 80,563.74, 120,886.54 and 36,181.42

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Solution

The fourth proportional to 80,563.74, 120,886.54 and 36,181.42 is: 54,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.74 : 120,886.54 = 36,181.42 : x
  2. Step 2: Convert to fraction form
    80,563.74/120,886.54 = 36,181.42/x
  3. Step 3: Cross multiply
    80,563.74x = 120,886.54 × 36,181.42
  4. Step 4: Simplify right side
    80,563.74x = 4,373,846,676.09
  5. Step 5: Solve for x
    x = 4,373,846,676.09/80,563.74
  6. Step 6: Final answer
    x = 54,290.51

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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.