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Finding the Fourth Proportional to 71,767.67, 107,674.55 and 21,857.42

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Solution

The fourth proportional to 71,767.67, 107,674.55 and 21,857.42 is: 32,793.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,767.67 : 107,674.55 = 21,857.42 : x
  2. Step 2: Convert to fraction form
    71,767.67/107,674.55 = 21,857.42/x
  3. Step 3: Cross multiply
    71,767.67x = 107,674.55 × 21,857.42
  4. Step 4: Simplify right side
    71,767.67x = 2,353,487,215.00
  5. Step 5: Solve for x
    x = 2,353,487,215.00/71,767.67
  6. Step 6: Final answer
    x = 32,793.14

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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.