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Finding the Third Proportional to 18,396,981 and 38,700,810

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Solution

The third proportional to 18,396,981 and 38,700,810 is: 81,412,960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396,981 : 38,700,810 = 38,700,810 : x
  2. Step 2: Convert to fraction form
    18,396,981/38,700,810 = 38,700,810/x
  3. Step 3: Cross multiply
    18,396,981x = 38,700,810 × 38,700,810
  4. Step 4: Simplify right side
    18,396,981x = 1,497,752,694,656,100
  5. Step 5: Solve for x
    x = 1,497,752,694,656,100/18,396,981
  6. Step 6: Final answer
    x = 81,412,960.89

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.