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Finding the Third Proportional to 21,218.50 and 49,545

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Solution

The third proportional to 21,218.50 and 49,545 is: 115,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.50 : 49,545 = 49,545 : x
  2. Step 2: Convert to fraction form
    21,218.50/49,545 = 49,545/x
  3. Step 3: Cross multiply
    21,218.50x = 49,545 × 49,545
  4. Step 4: Simplify right side
    21,218.50x = 2,454,707,025
  5. Step 5: Solve for x
    x = 2,454,707,025/21,218.50
  6. Step 6: Final answer
    x = 115,687.11

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.