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Finding the Third Proportional to 66,798 and 89,397

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Solution

The third proportional to 66,798 and 89,397 is: 119,641.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,798 : 89,397 = 89,397 : x
  2. Step 2: Convert to fraction form
    66,798/89,397 = 89,397/x
  3. Step 3: Cross multiply
    66,798x = 89,397 × 89,397
  4. Step 4: Simplify right side
    66,798x = 7,991,823,609
  5. Step 5: Solve for x
    x = 7,991,823,609/66,798
  6. Step 6: Final answer
    x = 119,641.66

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.