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Finding the Fourth Proportional to 66,365.64, 91,584.57 and 36,557.64

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Solution

The fourth proportional to 66,365.64, 91,584.57 and 36,557.64 is: 50,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,365.64 : 91,584.57 = 36,557.64 : x
  2. Step 2: Convert to fraction form
    66,365.64/91,584.57 = 36,557.64/x
  3. Step 3: Cross multiply
    66,365.64x = 91,584.57 × 36,557.64
  4. Step 4: Simplify right side
    66,365.64x = 3,348,115,739.61
  5. Step 5: Solve for x
    x = 3,348,115,739.61/66,365.64
  6. Step 6: Final answer
    x = 50,449.54

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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.