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Finding the Fourth Proportional to 66,601.94, 91,917.04 and 36,391.86

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Solution

The fourth proportional to 66,601.94, 91,917.04 and 36,391.86 is: 50,224.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,601.94 : 91,917.04 = 36,391.86 : x
  2. Step 2: Convert to fraction form
    66,601.94/91,917.04 = 36,391.86/x
  3. Step 3: Cross multiply
    66,601.94x = 91,917.04 × 36,391.86
  4. Step 4: Simplify right side
    66,601.94x = 3,345,031,409.75
  5. Step 5: Solve for x
    x = 3,345,031,409.75/66,601.94
  6. Step 6: Final answer
    x = 50,224.23

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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.