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Finding the Fourth Proportional to 66,991.91, 100,333.83 and 37,344.09

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Solution

The fourth proportional to 66,991.91, 100,333.83 and 37,344.09 is: 55,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.91 : 100,333.83 = 37,344.09 : x
  2. Step 2: Convert to fraction form
    66,991.91/100,333.83 = 37,344.09/x
  3. Step 3: Cross multiply
    66,991.91x = 100,333.83 × 37,344.09
  4. Step 4: Simplify right side
    66,991.91x = 3,746,875,577.56
  5. Step 5: Solve for x
    x = 3,746,875,577.56/66,991.91
  6. Step 6: Final answer
    x = 55,930.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.