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Finding the Third Proportional to 36,040 and 78,722

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Solution

The third proportional to 36,040 and 78,722 is: 171,952.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,040 : 78,722 = 78,722 : x
  2. Step 2: Convert to fraction form
    36,040/78,722 = 78,722/x
  3. Step 3: Cross multiply
    36,040x = 78,722 × 78,722
  4. Step 4: Simplify right side
    36,040x = 6,197,153,284
  5. Step 5: Solve for x
    x = 6,197,153,284/36,040
  6. Step 6: Final answer
    x = 171,952.09

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.