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Finding the Third Proportional to 55,760 and 115,380

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Solution

The third proportional to 55,760 and 115,380 is: 238,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,760 : 115,380 = 115,380 : x
  2. Step 2: Convert to fraction form
    55,760/115,380 = 115,380/x
  3. Step 3: Cross multiply
    55,760x = 115,380 × 115,380
  4. Step 4: Simplify right side
    55,760x = 13,312,544,400
  5. Step 5: Solve for x
    x = 13,312,544,400/55,760
  6. Step 6: Final answer
    x = 238,747.21

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.