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Finding the Third Proportional to 18,868 and 39,572

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Solution

The third proportional to 18,868 and 39,572 is: 82,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868 : 39,572 = 39,572 : x
  2. Step 2: Convert to fraction form
    18,868/39,572 = 39,572/x
  3. Step 3: Cross multiply
    18,868x = 39,572 × 39,572
  4. Step 4: Simplify right side
    18,868x = 1,565,943,184
  5. Step 5: Solve for x
    x = 1,565,943,184/18,868
  6. Step 6: Final answer
    x = 82,994.66

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.