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Finding the Third Proportional to 18,423 and 39,755

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Solution

The third proportional to 18,423 and 39,755 is: 85,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423 : 39,755 = 39,755 : x
  2. Step 2: Convert to fraction form
    18,423/39,755 = 39,755/x
  3. Step 3: Cross multiply
    18,423x = 39,755 × 39,755
  4. Step 4: Simplify right side
    18,423x = 1,580,460,025
  5. Step 5: Solve for x
    x = 1,580,460,025/18,423
  6. Step 6: Final answer
    x = 85,787.33

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.