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Finding the Third Proportional to 53,272 and 76,740

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Solution

The third proportional to 53,272 and 76,740 is: 110,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,272 : 76,740 = 76,740 : x
  2. Step 2: Convert to fraction form
    53,272/76,740 = 76,740/x
  3. Step 3: Cross multiply
    53,272x = 76,740 × 76,740
  4. Step 4: Simplify right side
    53,272x = 5,889,027,600
  5. Step 5: Solve for x
    x = 5,889,027,600/53,272
  6. Step 6: Final answer
    x = 110,546.40

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.