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Finding the Third Proportional to 40,872 and 63,312

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Solution

The third proportional to 40,872 and 63,312 is: 98,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,872 : 63,312 = 63,312 : x
  2. Step 2: Convert to fraction form
    40,872/63,312 = 63,312/x
  3. Step 3: Cross multiply
    40,872x = 63,312 × 63,312
  4. Step 4: Simplify right side
    40,872x = 4,008,409,344
  5. Step 5: Solve for x
    x = 4,008,409,344/40,872
  6. Step 6: Final answer
    x = 98,072.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.