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Finding the Fourth Proportional to 66,400.32, 91,629.77 and 36,184.99

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Solution

The fourth proportional to 66,400.32, 91,629.77 and 36,184.99 is: 49,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.32 : 91,629.77 = 36,184.99 : x
  2. Step 2: Convert to fraction form
    66,400.32/91,629.77 = 36,184.99/x
  3. Step 3: Cross multiply
    66,400.32x = 91,629.77 × 36,184.99
  4. Step 4: Simplify right side
    66,400.32x = 3,315,622,311.15
  5. Step 5: Solve for x
    x = 3,315,622,311.15/66,400.32
  6. Step 6: Final answer
    x = 49,933.83

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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.