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Finding the Third Proportional to 19,880 and 43,678

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Solution

The third proportional to 19,880 and 43,678 is: 95,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880 : 43,678 = 43,678 : x
  2. Step 2: Convert to fraction form
    19,880/43,678 = 43,678/x
  3. Step 3: Cross multiply
    19,880x = 43,678 × 43,678
  4. Step 4: Simplify right side
    19,880x = 1,907,767,684
  5. Step 5: Solve for x
    x = 1,907,767,684/19,880
  6. Step 6: Final answer
    x = 95,964.17

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.