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Finding the Third Proportional to 17,878.50 and 35,307

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Solution

The third proportional to 17,878.50 and 35,307 is: 69,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.50 : 35,307 = 35,307 : x
  2. Step 2: Convert to fraction form
    17,878.50/35,307 = 35,307/x
  3. Step 3: Cross multiply
    17,878.50x = 35,307 × 35,307
  4. Step 4: Simplify right side
    17,878.50x = 1,246,584,249
  5. Step 5: Solve for x
    x = 1,246,584,249/17,878.50
  6. Step 6: Final answer
    x = 69,725.33

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.