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Finding the Third Proportional to 18,619 and 36,303

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Solution

The third proportional to 18,619 and 36,303 is: 70,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619 : 36,303 = 36,303 : x
  2. Step 2: Convert to fraction form
    18,619/36,303 = 36,303/x
  3. Step 3: Cross multiply
    18,619x = 36,303 × 36,303
  4. Step 4: Simplify right side
    18,619x = 1,317,907,809
  5. Step 5: Solve for x
    x = 1,317,907,809/18,619
  6. Step 6: Final answer
    x = 70,782.95

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.