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Finding the Fourth Proportional to 68,496.96, 102,744.18 and 21,749.88

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Solution

The fourth proportional to 68,496.96, 102,744.18 and 21,749.88 is: 32,624.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,496.96 : 102,744.18 = 21,749.88 : x
  2. Step 2: Convert to fraction form
    68,496.96/102,744.18 = 21,749.88/x
  3. Step 3: Cross multiply
    68,496.96x = 102,744.18 × 21,749.88
  4. Step 4: Simplify right side
    68,496.96x = 2,234,673,585.70
  5. Step 5: Solve for x
    x = 2,234,673,585.70/68,496.96
  6. Step 6: Final answer
    x = 32,624.42

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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.