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Finding the Third Proportional to 39,979.50 and 53,335.50

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Solution

The third proportional to 39,979.50 and 53,335.50 is: 71,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.50 : 53,335.50 = 53,335.50 : x
  2. Step 2: Convert to fraction form
    39,979.50/53,335.50 = 53,335.50/x
  3. Step 3: Cross multiply
    39,979.50x = 53,335.50 × 53,335.50
  4. Step 4: Simplify right side
    39,979.50x = 2,844,675,560.25
  5. Step 5: Solve for x
    x = 2,844,675,560.25/39,979.50
  6. Step 6: Final answer
    x = 71,153.36

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These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.