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Finding the Fourth Proportional to 66,625.92, 91,940.16 and 36,816

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Solution

The fourth proportional to 66,625.92, 91,940.16 and 36,816 is: 50,804.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,625.92 : 91,940.16 = 36,816 : x
  2. Step 2: Convert to fraction form
    66,625.92/91,940.16 = 36,816/x
  3. Step 3: Cross multiply
    66,625.92x = 91,940.16 × 36,816
  4. Step 4: Simplify right side
    66,625.92x = 3,384,868,930.56
  5. Step 5: Solve for x
    x = 3,384,868,930.56/66,625.92
  6. Step 6: Final answer
    x = 50,804.09

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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.