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Finding the Fourth Proportional to 66,364.56, 91,579.92 and 36,149.72

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Solution

The fourth proportional to 66,364.56, 91,579.92 and 36,149.72 is: 49,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,364.56 : 91,579.92 = 36,149.72 : x
  2. Step 2: Convert to fraction form
    66,364.56/91,579.92 = 36,149.72/x
  3. Step 3: Cross multiply
    66,364.56x = 91,579.92 × 36,149.72
  4. Step 4: Simplify right side
    66,364.56x = 3,310,588,465.62
  5. Step 5: Solve for x
    x = 3,310,588,465.62/66,364.56
  6. Step 6: Final answer
    x = 49,884.89

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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.