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Finding the Fourth Proportional to 66,393.27, 91,621.53 and 36,178.85

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Solution

The fourth proportional to 66,393.27, 91,621.53 and 36,178.85 is: 49,926.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,393.27 : 91,621.53 = 36,178.85 : x
  2. Step 2: Convert to fraction form
    66,393.27/91,621.53 = 36,178.85/x
  3. Step 3: Cross multiply
    66,393.27x = 91,621.53 × 36,178.85
  4. Step 4: Simplify right side
    66,393.27x = 3,314,761,819.69
  5. Step 5: Solve for x
    x = 3,314,761,819.69/66,393.27
  6. Step 6: Final answer
    x = 49,926.17

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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.