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Finding the Fourth Proportional to 66,236.74, 91,409.04 and 37,947.89

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Solution

The fourth proportional to 66,236.74, 91,409.04 and 37,947.89 is: 52,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,236.74 : 91,409.04 = 37,947.89 : x
  2. Step 2: Convert to fraction form
    66,236.74/91,409.04 = 37,947.89/x
  3. Step 3: Cross multiply
    66,236.74x = 91,409.04 × 37,947.89
  4. Step 4: Simplify right side
    66,236.74x = 3,468,780,423.45
  5. Step 5: Solve for x
    x = 3,468,780,423.45/66,236.74
  6. Step 6: Final answer
    x = 52,369.43

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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.