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Finding the Third Proportional to 18,717 and 40,894.50

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Solution

The third proportional to 18,717 and 40,894.50 is: 89,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717 : 40,894.50 = 40,894.50 : x
  2. Step 2: Convert to fraction form
    18,717/40,894.50 = 40,894.50/x
  3. Step 3: Cross multiply
    18,717x = 40,894.50 × 40,894.50
  4. Step 4: Simplify right side
    18,717x = 1,672,360,130.25
  5. Step 5: Solve for x
    x = 1,672,360,130.25/18,717
  6. Step 6: Final answer
    x = 89,349.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.