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Finding the Third Proportional to 55,809 and 120,042

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Solution

The third proportional to 55,809 and 120,042 is: 258,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,809 : 120,042 = 120,042 : x
  2. Step 2: Convert to fraction form
    55,809/120,042 = 120,042/x
  3. Step 3: Cross multiply
    55,809x = 120,042 × 120,042
  4. Step 4: Simplify right side
    55,809x = 14,410,081,764
  5. Step 5: Solve for x
    x = 14,410,081,764/55,809
  6. Step 6: Final answer
    x = 258,203.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.