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Finding the Third Proportional to 21,387 and 44,718

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Solution

The third proportional to 21,387 and 44,718 is: 93,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387 : 44,718 = 44,718 : x
  2. Step 2: Convert to fraction form
    21,387/44,718 = 44,718/x
  3. Step 3: Cross multiply
    21,387x = 44,718 × 44,718
  4. Step 4: Simplify right side
    21,387x = 1,999,699,524
  5. Step 5: Solve for x
    x = 1,999,699,524/21,387
  6. Step 6: Final answer
    x = 93,500.70

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.