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Finding the Third Proportional to 18,300 and 39,242

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Solution

The third proportional to 18,300 and 39,242 is: 84,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300 : 39,242 = 39,242 : x
  2. Step 2: Convert to fraction form
    18,300/39,242 = 39,242/x
  3. Step 3: Cross multiply
    18,300x = 39,242 × 39,242
  4. Step 4: Simplify right side
    18,300x = 1,539,934,564
  5. Step 5: Solve for x
    x = 1,539,934,564/18,300
  6. Step 6: Final answer
    x = 84,149.43

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.