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Finding the Third Proportional to 20,490 and 41,732

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Solution

The third proportional to 20,490 and 41,732 is: 84,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490 : 41,732 = 41,732 : x
  2. Step 2: Convert to fraction form
    20,490/41,732 = 41,732/x
  3. Step 3: Cross multiply
    20,490x = 41,732 × 41,732
  4. Step 4: Simplify right side
    20,490x = 1,741,559,824
  5. Step 5: Solve for x
    x = 1,741,559,824/20,490
  6. Step 6: Final answer
    x = 84,995.60

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.