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Finding the Fourth Proportional to 66,382.97, 91,607.99 and 36,168.20

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Solution

The fourth proportional to 66,382.97, 91,607.99 and 36,168.20 is: 49,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,382.97 : 91,607.99 = 36,168.20 : x
  2. Step 2: Convert to fraction form
    66,382.97/91,607.99 = 36,168.20/x
  3. Step 3: Cross multiply
    66,382.97x = 91,607.99 × 36,168.20
  4. Step 4: Simplify right side
    66,382.97x = 3,313,296,103.92
  5. Step 5: Solve for x
    x = 3,313,296,103.92/66,382.97
  6. Step 6: Final answer
    x = 49,911.84

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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.