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Finding the Third Proportional to 38,515.50 and 79,623

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Solution

The third proportional to 38,515.50 and 79,623 is: 164,604.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.50 : 79,623 = 79,623 : x
  2. Step 2: Convert to fraction form
    38,515.50/79,623 = 79,623/x
  3. Step 3: Cross multiply
    38,515.50x = 79,623 × 79,623
  4. Step 4: Simplify right side
    38,515.50x = 6,339,822,129
  5. Step 5: Solve for x
    x = 6,339,822,129/38,515.50
  6. Step 6: Final answer
    x = 164,604.44

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.