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Finding the Fourth Proportional to 66,028.92, 91,119.14 and 35,813.70

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Solution

The fourth proportional to 66,028.92, 91,119.14 and 35,813.70 is: 49,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.92 : 91,119.14 = 35,813.70 : x
  2. Step 2: Convert to fraction form
    66,028.92/91,119.14 = 35,813.70/x
  3. Step 3: Cross multiply
    66,028.92x = 91,119.14 × 35,813.70
  4. Step 4: Simplify right side
    66,028.92x = 3,263,313,544.22
  5. Step 5: Solve for x
    x = 3,263,313,544.22/66,028.92
  6. Step 6: Final answer
    x = 49,422.49

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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.