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Finding the Fourth Proportional to 66,600.36, 91,908.14 and 36,387.41

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Solution

The fourth proportional to 66,600.36, 91,908.14 and 36,387.41 is: 50,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.36 : 91,908.14 = 36,387.41 : x
  2. Step 2: Convert to fraction form
    66,600.36/91,908.14 = 36,387.41/x
  3. Step 3: Cross multiply
    66,600.36x = 91,908.14 × 36,387.41
  4. Step 4: Simplify right side
    66,600.36x = 3,344,298,531.04
  5. Step 5: Solve for x
    x = 3,344,298,531.04/66,600.36
  6. Step 6: Final answer
    x = 50,214.42

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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.