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Finding the Third Proportional to 18,042.75 and 39,155.27

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Solution

The third proportional to 18,042.75 and 39,155.27 is: 84,972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,042.75 : 39,155.27 = 39,155.27 : x
  2. Step 2: Convert to fraction form
    18,042.75/39,155.27 = 39,155.27/x
  3. Step 3: Cross multiply
    18,042.75x = 39,155.27 × 39,155.27
  4. Step 4: Simplify right side
    18,042.75x = 1,533,135,437.97
  5. Step 5: Solve for x
    x = 1,533,135,437.97/18,042.75
  6. Step 6: Final answer
    x = 84,972.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.