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Finding the Third Proportional to 36,678 and 70,440

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Solution

The third proportional to 36,678 and 70,440 is: 135,279.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,678 : 70,440 = 70,440 : x
  2. Step 2: Convert to fraction form
    36,678/70,440 = 70,440/x
  3. Step 3: Cross multiply
    36,678x = 70,440 × 70,440
  4. Step 4: Simplify right side
    36,678x = 4,961,793,600
  5. Step 5: Solve for x
    x = 4,961,793,600/36,678
  6. Step 6: Final answer
    x = 135,279.83

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.