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Finding the Third Proportional to 18,396,812 and 38,700,472

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Solution

The third proportional to 18,396,812 and 38,700,472 is: 81,412,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396,812 : 38,700,472 = 38,700,472 : x
  2. Step 2: Convert to fraction form
    18,396,812/38,700,472 = 38,700,472/x
  3. Step 3: Cross multiply
    18,396,812x = 38,700,472 × 38,700,472
  4. Step 4: Simplify right side
    18,396,812x = 1,497,726,533,022,784
  5. Step 5: Solve for x
    x = 1,497,726,533,022,784/18,396,812
  6. Step 6: Final answer
    x = 81,412,286.71

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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.