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Finding the Third Proportional to 21,176 and 47,748

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Solution

The third proportional to 21,176 and 47,748 is: 107,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176 : 47,748 = 47,748 : x
  2. Step 2: Convert to fraction form
    21,176/47,748 = 47,748/x
  3. Step 3: Cross multiply
    21,176x = 47,748 × 47,748
  4. Step 4: Simplify right side
    21,176x = 2,279,871,504
  5. Step 5: Solve for x
    x = 2,279,871,504/21,176
  6. Step 6: Final answer
    x = 107,662.99

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.