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Finding the Third Proportional to 18,242 and 39,913

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Solution

The third proportional to 18,242 and 39,913 is: 87,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242 : 39,913 = 39,913 : x
  2. Step 2: Convert to fraction form
    18,242/39,913 = 39,913/x
  3. Step 3: Cross multiply
    18,242x = 39,913 × 39,913
  4. Step 4: Simplify right side
    18,242x = 1,593,047,569
  5. Step 5: Solve for x
    x = 1,593,047,569/18,242
  6. Step 6: Final answer
    x = 87,328.56

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.