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Finding the Third Proportional to 58,486.78 and 81,489.38

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Solution

The third proportional to 58,486.78 and 81,489.38 is: 113,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,486.78 : 81,489.38 = 81,489.38 : x
  2. Step 2: Convert to fraction form
    58,486.78/81,489.38 = 81,489.38/x
  3. Step 3: Cross multiply
    58,486.78x = 81,489.38 × 81,489.38
  4. Step 4: Simplify right side
    58,486.78x = 6,640,518,237.89
  5. Step 5: Solve for x
    x = 6,640,518,237.89/58,486.78
  6. Step 6: Final answer
    x = 113,538.79

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.