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Finding the Third Proportional to 21,602 and 43,972

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Solution

The third proportional to 21,602 and 43,972 is: 89,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602 : 43,972 = 43,972 : x
  2. Step 2: Convert to fraction form
    21,602/43,972 = 43,972/x
  3. Step 3: Cross multiply
    21,602x = 43,972 × 43,972
  4. Step 4: Simplify right side
    21,602x = 1,933,536,784
  5. Step 5: Solve for x
    x = 1,933,536,784/21,602
  6. Step 6: Final answer
    x = 89,507.30

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.