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Finding the Third Proportional to 19,148.50 and 40,505

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Solution

The third proportional to 19,148.50 and 40,505 is: 85,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,148.50 : 40,505 = 40,505 : x
  2. Step 2: Convert to fraction form
    19,148.50/40,505 = 40,505/x
  3. Step 3: Cross multiply
    19,148.50x = 40,505 × 40,505
  4. Step 4: Simplify right side
    19,148.50x = 1,640,655,025
  5. Step 5: Solve for x
    x = 1,640,655,025/19,148.50
  6. Step 6: Final answer
    x = 85,680.60

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.