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Finding the Third Proportional to 62,640 and 90,504

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Solution

The third proportional to 62,640 and 90,504 is: 130,762.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640 : 90,504 = 90,504 : x
  2. Step 2: Convert to fraction form
    62,640/90,504 = 90,504/x
  3. Step 3: Cross multiply
    62,640x = 90,504 × 90,504
  4. Step 4: Simplify right side
    62,640x = 8,190,974,016
  5. Step 5: Solve for x
    x = 8,190,974,016/62,640
  6. Step 6: Final answer
    x = 130,762.68

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.