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Finding the Fourth Proportional to 66,336.39, 91,541.16 and 36,121.59

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Solution

The fourth proportional to 66,336.39, 91,541.16 and 36,121.59 is: 49,846.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,336.39 : 91,541.16 = 36,121.59 : x
  2. Step 2: Convert to fraction form
    66,336.39/91,541.16 = 36,121.59/x
  3. Step 3: Cross multiply
    66,336.39x = 91,541.16 × 36,121.59
  4. Step 4: Simplify right side
    66,336.39x = 3,306,612,249.64
  5. Step 5: Solve for x
    x = 3,306,612,249.64/66,336.39
  6. Step 6: Final answer
    x = 49,846.13

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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.