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Finding the Fourth Proportional to 66,399.82, 91,629.08 and 36,184.50

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Solution

The fourth proportional to 66,399.82, 91,629.08 and 36,184.50 is: 49,933.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.82 : 91,629.08 = 36,184.50 : x
  2. Step 2: Convert to fraction form
    66,399.82/91,629.08 = 36,184.50/x
  3. Step 3: Cross multiply
    66,399.82x = 91,629.08 × 36,184.50
  4. Step 4: Simplify right side
    66,399.82x = 3,315,551,987.11
  5. Step 5: Solve for x
    x = 3,315,551,987.11/66,399.82
  6. Step 6: Final answer
    x = 49,933.15

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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.