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Finding the Fourth Proportional to 68,652.16, 102,982.92 and 21,908.56

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Solution

The fourth proportional to 68,652.16, 102,982.92 and 21,908.56 is: 32,864.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,652.16 : 102,982.92 = 21,908.56 : x
  2. Step 2: Convert to fraction form
    68,652.16/102,982.92 = 21,908.56/x
  3. Step 3: Cross multiply
    68,652.16x = 102,982.92 × 21,908.56
  4. Step 4: Simplify right side
    68,652.16x = 2,256,207,481.80
  5. Step 5: Solve for x
    x = 2,256,207,481.80/68,652.16
  6. Step 6: Final answer
    x = 32,864.33

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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.