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Finding the Fourth Proportional to 66,963.94, 92,387.33 and 38,263

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Solution

The fourth proportional to 66,963.94, 92,387.33 and 38,263 is: 52,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.94 : 92,387.33 = 38,263 : x
  2. Step 2: Convert to fraction form
    66,963.94/92,387.33 = 38,263/x
  3. Step 3: Cross multiply
    66,963.94x = 92,387.33 × 38,263
  4. Step 4: Simplify right side
    66,963.94x = 3,535,016,407.79
  5. Step 5: Solve for x
    x = 3,535,016,407.79/66,963.94
  6. Step 6: Final answer
    x = 52,789.85

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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.