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Finding the Third Proportional to 21,655 and 47,360

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Solution

The third proportional to 21,655 and 47,360 is: 103,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655 : 47,360 = 47,360 : x
  2. Step 2: Convert to fraction form
    21,655/47,360 = 47,360/x
  3. Step 3: Cross multiply
    21,655x = 47,360 × 47,360
  4. Step 4: Simplify right side
    21,655x = 2,242,969,600
  5. Step 5: Solve for x
    x = 2,242,969,600/21,655
  6. Step 6: Final answer
    x = 103,577.45

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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.