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Finding the Third Proportional to 55,520 and 122,110

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Solution

The third proportional to 55,520 and 122,110 is: 268,567.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,520 : 122,110 = 122,110 : x
  2. Step 2: Convert to fraction form
    55,520/122,110 = 122,110/x
  3. Step 3: Cross multiply
    55,520x = 122,110 × 122,110
  4. Step 4: Simplify right side
    55,520x = 14,910,852,100
  5. Step 5: Solve for x
    x = 14,910,852,100/55,520
  6. Step 6: Final answer
    x = 268,567.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.