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Finding the Fourth Proportional to 66,514.58, 91,786.74 and 36,299.66

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Solution

The fourth proportional to 66,514.58, 91,786.74 and 36,299.66 is: 50,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,514.58 : 91,786.74 = 36,299.66 : x
  2. Step 2: Convert to fraction form
    66,514.58/91,786.74 = 36,299.66/x
  3. Step 3: Cross multiply
    66,514.58x = 91,786.74 × 36,299.66
  4. Step 4: Simplify right side
    66,514.58x = 3,331,826,995.57
  5. Step 5: Solve for x
    x = 3,331,826,995.57/66,514.58
  6. Step 6: Final answer
    x = 50,091.68

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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.