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Finding the Third Proportional to 18,471.38 and 39,570.75

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Solution

The third proportional to 18,471.38 and 39,570.75 is: 84,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.38 : 39,570.75 = 39,570.75 : x
  2. Step 2: Convert to fraction form
    18,471.38/39,570.75 = 39,570.75/x
  3. Step 3: Cross multiply
    18,471.38x = 39,570.75 × 39,570.75
  4. Step 4: Simplify right side
    18,471.38x = 1,565,844,255.56
  5. Step 5: Solve for x
    x = 1,565,844,255.56/18,471.38
  6. Step 6: Final answer
    x = 84,771.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.