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Finding the Third Proportional to 39,502.50 and 86,619

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Solution

The third proportional to 39,502.50 and 86,619 is: 189,933.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,502.50 : 86,619 = 86,619 : x
  2. Step 2: Convert to fraction form
    39,502.50/86,619 = 86,619/x
  3. Step 3: Cross multiply
    39,502.50x = 86,619 × 86,619
  4. Step 4: Simplify right side
    39,502.50x = 7,502,851,161
  5. Step 5: Solve for x
    x = 7,502,851,161/39,502.50
  6. Step 6: Final answer
    x = 189,933.58

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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.