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Finding the Third Proportional to 39,921.19 and 87,618.38

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Solution

The third proportional to 39,921.19 and 87,618.38 is: 192,303.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,921.19 : 87,618.38 = 87,618.38 : x
  2. Step 2: Convert to fraction form
    39,921.19/87,618.38 = 87,618.38/x
  3. Step 3: Cross multiply
    39,921.19x = 87,618.38 × 87,618.38
  4. Step 4: Simplify right side
    39,921.19x = 7,676,979,637.64
  5. Step 5: Solve for x
    x = 7,676,979,637.64/39,921.19
  6. Step 6: Final answer
    x = 192,303.39

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.