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Finding the Third Proportional to 20,861,928 and 42,313,422

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Solution

The third proportional to 20,861,928 and 42,313,422 is: 85,822,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861,928 : 42,313,422 = 42,313,422 : x
  2. Step 2: Convert to fraction form
    20,861,928/42,313,422 = 42,313,422/x
  3. Step 3: Cross multiply
    20,861,928x = 42,313,422 × 42,313,422
  4. Step 4: Simplify right side
    20,861,928x = 1,790,425,681,350,084
  5. Step 5: Solve for x
    x = 1,790,425,681,350,084/20,861,928
  6. Step 6: Final answer
    x = 85,822,637.36

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.