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Finding the Fourth Proportional to 66,615.26, 91,927.89 and 36,399.83

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Solution

The fourth proportional to 66,615.26, 91,927.89 and 36,399.83 is: 50,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.26 : 91,927.89 = 36,399.83 : x
  2. Step 2: Convert to fraction form
    66,615.26/91,927.89 = 36,399.83/x
  3. Step 3: Cross multiply
    66,615.26x = 91,927.89 × 36,399.83
  4. Step 4: Simplify right side
    66,615.26x = 3,346,159,108.62
  5. Step 5: Solve for x
    x = 3,346,159,108.62/66,615.26
  6. Step 6: Final answer
    x = 50,231.12

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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.