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Finding the Fourth Proportional to 66,394.09, 91,623.86 and 36,179.43

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Solution

The fourth proportional to 66,394.09, 91,623.86 and 36,179.43 is: 49,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.09 : 91,623.86 = 36,179.43 : x
  2. Step 2: Convert to fraction form
    66,394.09/91,623.86 = 36,179.43/x
  3. Step 3: Cross multiply
    66,394.09x = 91,623.86 × 36,179.43
  4. Step 4: Simplify right side
    66,394.09x = 3,314,898,390.18
  5. Step 5: Solve for x
    x = 3,314,898,390.18/66,394.09
  6. Step 6: Final answer
    x = 49,927.61

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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.