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Finding the Third Proportional to 53,487 and 82,788.75

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Solution

The third proportional to 53,487 and 82,788.75 is: 128,142.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,487 : 82,788.75 = 82,788.75 : x
  2. Step 2: Convert to fraction form
    53,487/82,788.75 = 82,788.75/x
  3. Step 3: Cross multiply
    53,487x = 82,788.75 × 82,788.75
  4. Step 4: Simplify right side
    53,487x = 6,853,977,126.56
  5. Step 5: Solve for x
    x = 6,853,977,126.56/53,487
  6. Step 6: Final answer
    x = 128,142.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.