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Finding the Third Proportional to 21,960 and 47,664

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Solution

The third proportional to 21,960 and 47,664 is: 103,454.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960 : 47,664 = 47,664 : x
  2. Step 2: Convert to fraction form
    21,960/47,664 = 47,664/x
  3. Step 3: Cross multiply
    21,960x = 47,664 × 47,664
  4. Step 4: Simplify right side
    21,960x = 2,271,856,896
  5. Step 5: Solve for x
    x = 2,271,856,896/21,960
  6. Step 6: Final answer
    x = 103,454.32

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.