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Finding the Fourth Proportional to 66,481.99, 91,736.91 and 40,653.52

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Solution

The fourth proportional to 66,481.99, 91,736.91 and 40,653.52 is: 56,096.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.99 : 91,736.91 = 40,653.52 : x
  2. Step 2: Convert to fraction form
    66,481.99/91,736.91 = 40,653.52/x
  3. Step 3: Cross multiply
    66,481.99x = 91,736.91 × 40,653.52
  4. Step 4: Simplify right side
    66,481.99x = 3,729,428,305.42
  5. Step 5: Solve for x
    x = 3,729,428,305.42/66,481.99
  6. Step 6: Final answer
    x = 56,096.82

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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.