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Finding the Third Proportional to 18,910.50 and 40,707.75

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Solution

The third proportional to 18,910.50 and 40,707.75 is: 87,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.50 : 40,707.75 = 40,707.75 : x
  2. Step 2: Convert to fraction form
    18,910.50/40,707.75 = 40,707.75/x
  3. Step 3: Cross multiply
    18,910.50x = 40,707.75 × 40,707.75
  4. Step 4: Simplify right side
    18,910.50x = 1,657,120,910.06
  5. Step 5: Solve for x
    x = 1,657,120,910.06/18,910.50
  6. Step 6: Final answer
    x = 87,629.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.