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Finding the Third Proportional to 18,396,800 and 38,700,448

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Solution

The third proportional to 18,396,800 and 38,700,448 is: 81,412,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396,800 : 38,700,448 = 38,700,448 : x
  2. Step 2: Convert to fraction form
    18,396,800/38,700,448 = 38,700,448/x
  3. Step 3: Cross multiply
    18,396,800x = 38,700,448 × 38,700,448
  4. Step 4: Simplify right side
    18,396,800x = 1,497,724,675,400,704
  5. Step 5: Solve for x
    x = 1,497,724,675,400,704/18,396,800
  6. Step 6: Final answer
    x = 81,412,238.84

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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.