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Finding the Third Proportional to 55,640 and 73,512

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Solution

The third proportional to 55,640 and 73,512 is: 97,124.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,640 : 73,512 = 73,512 : x
  2. Step 2: Convert to fraction form
    55,640/73,512 = 73,512/x
  3. Step 3: Cross multiply
    55,640x = 73,512 × 73,512
  4. Step 4: Simplify right side
    55,640x = 5,404,014,144
  5. Step 5: Solve for x
    x = 5,404,014,144/55,640
  6. Step 6: Final answer
    x = 97,124.63

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.