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Finding the Fourth Proportional to 66,149.57, 91,251.41 and 41,907.77

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Solution

The fourth proportional to 66,149.57, 91,251.41 and 41,907.77 is: 57,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.57 : 91,251.41 = 41,907.77 : x
  2. Step 2: Convert to fraction form
    66,149.57/91,251.41 = 41,907.77/x
  3. Step 3: Cross multiply
    66,149.57x = 91,251.41 × 41,907.77
  4. Step 4: Simplify right side
    66,149.57x = 3,824,142,436.66
  5. Step 5: Solve for x
    x = 3,824,142,436.66/66,149.57
  6. Step 6: Final answer
    x = 57,810.55

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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.