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Finding the Third Proportional to 17,611.88 and 39,159

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Solution

The third proportional to 17,611.88 and 39,159 is: 87,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.88 : 39,159 = 39,159 : x
  2. Step 2: Convert to fraction form
    17,611.88/39,159 = 39,159/x
  3. Step 3: Cross multiply
    17,611.88x = 39,159 × 39,159
  4. Step 4: Simplify right side
    17,611.88x = 1,533,427,281
  5. Step 5: Solve for x
    x = 1,533,427,281/17,611.88
  6. Step 6: Final answer
    x = 87,067.80

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.