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Finding the Fourth Proportional to 80,445, 120,676.14 and 36,091.56

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Solution

The fourth proportional to 80,445, 120,676.14 and 36,091.56 is: 54,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,445 : 120,676.14 = 36,091.56 : x
  2. Step 2: Convert to fraction form
    80,445/120,676.14 = 36,091.56/x
  3. Step 3: Cross multiply
    80,445x = 120,676.14 × 36,091.56
  4. Step 4: Simplify right side
    80,445x = 4,355,390,147.38
  5. Step 5: Solve for x
    x = 4,355,390,147.38/80,445
  6. Step 6: Final answer
    x = 54,141.22

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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.