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Finding the Third Proportional to 21,688 and 47,516

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Solution

The third proportional to 21,688 and 47,516 is: 104,102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688 : 47,516 = 47,516 : x
  2. Step 2: Convert to fraction form
    21,688/47,516 = 47,516/x
  3. Step 3: Cross multiply
    21,688x = 47,516 × 47,516
  4. Step 4: Simplify right side
    21,688x = 2,257,770,256
  5. Step 5: Solve for x
    x = 2,257,770,256/21,688
  6. Step 6: Final answer
    x = 104,102.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.