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Finding the Fourth Proportional to 66,943.80, 92,383.40 and 36,728.57

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Solution

The fourth proportional to 66,943.80, 92,383.40 and 36,728.57 is: 50,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,943.80 : 92,383.40 = 36,728.57 : x
  2. Step 2: Convert to fraction form
    66,943.80/92,383.40 = 36,728.57/x
  3. Step 3: Cross multiply
    66,943.80x = 92,383.40 × 36,728.57
  4. Step 4: Simplify right side
    66,943.80x = 3,393,110,496.52
  5. Step 5: Solve for x
    x = 3,393,110,496.52/66,943.80
  6. Step 6: Final answer
    x = 50,685.96

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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.