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Finding the Third Proportional to 25,311 and 40,230

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Solution

The third proportional to 25,311 and 40,230 is: 63,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,311 : 40,230 = 40,230 : x
  2. Step 2: Convert to fraction form
    25,311/40,230 = 40,230/x
  3. Step 3: Cross multiply
    25,311x = 40,230 × 40,230
  4. Step 4: Simplify right side
    25,311x = 1,618,452,900
  5. Step 5: Solve for x
    x = 1,618,452,900/25,311
  6. Step 6: Final answer
    x = 63,942.67

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.