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Finding the Third Proportional to 18,859 and 39,267.75

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Solution

The third proportional to 18,859 and 39,267.75 is: 81,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859 : 39,267.75 = 39,267.75 : x
  2. Step 2: Convert to fraction form
    18,859/39,267.75 = 39,267.75/x
  3. Step 3: Cross multiply
    18,859x = 39,267.75 × 39,267.75
  4. Step 4: Simplify right side
    18,859x = 1,541,956,190.06
  5. Step 5: Solve for x
    x = 1,541,956,190.06/18,859
  6. Step 6: Final answer
    x = 81,762.35

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.