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Finding the Third Proportional to 17,979.47 and 39,239.44

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Solution

The third proportional to 17,979.47 and 39,239.44 is: 85,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.47 : 39,239.44 = 39,239.44 : x
  2. Step 2: Convert to fraction form
    17,979.47/39,239.44 = 39,239.44/x
  3. Step 3: Cross multiply
    17,979.47x = 39,239.44 × 39,239.44
  4. Step 4: Simplify right side
    17,979.47x = 1,539,733,455.32
  5. Step 5: Solve for x
    x = 1,539,733,455.32/17,979.47
  6. Step 6: Final answer
    x = 85,638.43

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.