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Finding the Fourth Proportional to 66,791.89, 100,190.95 and 37,187.43

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Solution

The fourth proportional to 66,791.89, 100,190.95 and 37,187.43 is: 55,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.89 : 100,190.95 = 37,187.43 : x
  2. Step 2: Convert to fraction form
    66,791.89/100,190.95 = 37,187.43/x
  3. Step 3: Cross multiply
    66,791.89x = 100,190.95 × 37,187.43
  4. Step 4: Simplify right side
    66,791.89x = 3,725,843,857.45
  5. Step 5: Solve for x
    x = 3,725,843,857.45/66,791.89
  6. Step 6: Final answer
    x = 55,782.88

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1.5x scale

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.