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Finding the Fourth Proportional to 65,768.56, 90,833.88 and 60,791.92

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Solution

The fourth proportional to 65,768.56, 90,833.88 and 60,791.92 is: 83,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,768.56 : 90,833.88 = 60,791.92 : x
  2. Step 2: Convert to fraction form
    65,768.56/90,833.88 = 60,791.92/x
  3. Step 3: Cross multiply
    65,768.56x = 90,833.88 × 60,791.92
  4. Step 4: Simplify right side
    65,768.56x = 5,521,965,966.25
  5. Step 5: Solve for x
    x = 5,521,965,966.25/65,768.56
  6. Step 6: Final answer
    x = 83,960.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.