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Finding the Third Proportional to 38,907 and 87,916.50

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Solution

The third proportional to 38,907 and 87,916.50 is: 198,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,907 : 87,916.50 = 87,916.50 : x
  2. Step 2: Convert to fraction form
    38,907/87,916.50 = 87,916.50/x
  3. Step 3: Cross multiply
    38,907x = 87,916.50 × 87,916.50
  4. Step 4: Simplify right side
    38,907x = 7,729,310,972.25
  5. Step 5: Solve for x
    x = 7,729,310,972.25/38,907
  6. Step 6: Final answer
    x = 198,661.19

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.