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Finding the Fourth Proportional to 66,093.89, 91,209.62 and 35,879.21

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Solution

The fourth proportional to 66,093.89, 91,209.62 and 35,879.21 is: 49,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,093.89 : 91,209.62 = 35,879.21 : x
  2. Step 2: Convert to fraction form
    66,093.89/91,209.62 = 35,879.21/x
  3. Step 3: Cross multiply
    66,093.89x = 91,209.62 × 35,879.21
  4. Step 4: Simplify right side
    66,093.89x = 3,272,528,474.56
  5. Step 5: Solve for x
    x = 3,272,528,474.56/66,093.89
  6. Step 6: Final answer
    x = 49,513.33

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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.