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Finding the Third Proportional to 34,640 and 53,988

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Solution

The third proportional to 34,640 and 53,988 is: 84,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,640 : 53,988 = 53,988 : x
  2. Step 2: Convert to fraction form
    34,640/53,988 = 53,988/x
  3. Step 3: Cross multiply
    34,640x = 53,988 × 53,988
  4. Step 4: Simplify right side
    34,640x = 2,914,704,144
  5. Step 5: Solve for x
    x = 2,914,704,144/34,640
  6. Step 6: Final answer
    x = 84,142.73

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.