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Finding the Fourth Proportional to 80,181.57, 120,279.65 and 21,017.01

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Solution

The fourth proportional to 80,181.57, 120,279.65 and 21,017.01 is: 31,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,181.57 : 120,279.65 = 21,017.01 : x
  2. Step 2: Convert to fraction form
    80,181.57/120,279.65 = 21,017.01/x
  3. Step 3: Cross multiply
    80,181.57x = 120,279.65 × 21,017.01
  4. Step 4: Simplify right side
    80,181.57x = 2,527,918,501.76
  5. Step 5: Solve for x
    x = 2,527,918,501.76/80,181.57
  6. Step 6: Final answer
    x = 31,527.43

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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.