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Finding the Fourth Proportional to 66,497.69, 99,745.57 and 30,939.12

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Solution

The fourth proportional to 66,497.69, 99,745.57 and 30,939.12 is: 46,408.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.69 : 99,745.57 = 30,939.12 : x
  2. Step 2: Convert to fraction form
    66,497.69/99,745.57 = 30,939.12/x
  3. Step 3: Cross multiply
    66,497.69x = 99,745.57 × 30,939.12
  4. Step 4: Simplify right side
    66,497.69x = 3,086,040,198.37
  5. Step 5: Solve for x
    x = 3,086,040,198.37/66,497.69
  6. Step 6: Final answer
    x = 46,408.23

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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.