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Finding the Fourth Proportional to 66,399.46, 91,629.57 and 36,185.56

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Solution

The fourth proportional to 66,399.46, 91,629.57 and 36,185.56 is: 49,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.46 : 91,629.57 = 36,185.56 : x
  2. Step 2: Convert to fraction form
    66,399.46/91,629.57 = 36,185.56/x
  3. Step 3: Cross multiply
    66,399.46x = 91,629.57 × 36,185.56
  4. Step 4: Simplify right side
    66,399.46x = 3,315,667,303.01
  5. Step 5: Solve for x
    x = 3,315,667,303.01/66,399.46
  6. Step 6: Final answer
    x = 49,935.15

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1.5x scale

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.