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Finding the Third Proportional to 39,969 and 86,161.50

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Solution

The third proportional to 39,969 and 86,161.50 is: 185,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969 : 86,161.50 = 86,161.50 : x
  2. Step 2: Convert to fraction form
    39,969/86,161.50 = 86,161.50/x
  3. Step 3: Cross multiply
    39,969x = 86,161.50 × 86,161.50
  4. Step 4: Simplify right side
    39,969x = 7,423,804,082.25
  5. Step 5: Solve for x
    x = 7,423,804,082.25/39,969
  6. Step 6: Final answer
    x = 185,739.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.