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Finding the Third Proportional to 19,409 and 36,100

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Solution

The third proportional to 19,409 and 36,100 is: 67,144.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409 : 36,100 = 36,100 : x
  2. Step 2: Convert to fraction form
    19,409/36,100 = 36,100/x
  3. Step 3: Cross multiply
    19,409x = 36,100 × 36,100
  4. Step 4: Simplify right side
    19,409x = 1,303,210,000
  5. Step 5: Solve for x
    x = 1,303,210,000/19,409
  6. Step 6: Final answer
    x = 67,144.62

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.