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Finding the Third Proportional to 14,391 and 31,449

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Solution

The third proportional to 14,391 and 31,449 is: 68,726.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391 : 31,449 = 31,449 : x
  2. Step 2: Convert to fraction form
    14,391/31,449 = 31,449/x
  3. Step 3: Cross multiply
    14,391x = 31,449 × 31,449
  4. Step 4: Simplify right side
    14,391x = 989,039,601
  5. Step 5: Solve for x
    x = 989,039,601/14,391
  6. Step 6: Final answer
    x = 68,726.26

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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.