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Finding the Third Proportional to 39,698 and 79,396

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Solution

The third proportional to 39,698 and 79,396 is: 158,792

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698 : 79,396 = 79,396 : x
  2. Step 2: Convert to fraction form
    39,698/79,396 = 79,396/x
  3. Step 3: Cross multiply
    39,698x = 79,396 × 79,396
  4. Step 4: Simplify right side
    39,698x = 6,303,724,816
  5. Step 5: Solve for x
    x = 6,303,724,816/39,698
  6. Step 6: Final answer
    x = 158,792

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Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.