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Finding the Third Proportional to 39,974 and 87,994

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Solution

The third proportional to 39,974 and 87,994 is: 193,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,974 : 87,994 = 87,994 : x
  2. Step 2: Convert to fraction form
    39,974/87,994 = 87,994/x
  3. Step 3: Cross multiply
    39,974x = 87,994 × 87,994
  4. Step 4: Simplify right side
    39,974x = 7,742,944,036
  5. Step 5: Solve for x
    x = 7,742,944,036/39,974
  6. Step 6: Final answer
    x = 193,699.51

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.