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Finding the Third Proportional to 21,726 and 47,605

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Solution

The third proportional to 21,726 and 47,605 is: 104,309.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726 : 47,605 = 47,605 : x
  2. Step 2: Convert to fraction form
    21,726/47,605 = 47,605/x
  3. Step 3: Cross multiply
    21,726x = 47,605 × 47,605
  4. Step 4: Simplify right side
    21,726x = 2,266,236,025
  5. Step 5: Solve for x
    x = 2,266,236,025/21,726
  6. Step 6: Final answer
    x = 104,309.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.