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Finding the Third Proportional to 35,781.75 and 68,310

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Solution

The third proportional to 35,781.75 and 68,310 is: 130,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.75 : 68,310 = 68,310 : x
  2. Step 2: Convert to fraction form
    35,781.75/68,310 = 68,310/x
  3. Step 3: Cross multiply
    35,781.75x = 68,310 × 68,310
  4. Step 4: Simplify right side
    35,781.75x = 4,666,256,100
  5. Step 5: Solve for x
    x = 4,666,256,100/35,781.75
  6. Step 6: Final answer
    x = 130,408.83

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.