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Finding the Fourth Proportional to 66,564.64, 91,858.48 and 36,349.87

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Solution

The fourth proportional to 66,564.64, 91,858.48 and 36,349.87 is: 50,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,564.64 : 91,858.48 = 36,349.87 : x
  2. Step 2: Convert to fraction form
    66,564.64/91,858.48 = 36,349.87/x
  3. Step 3: Cross multiply
    66,564.64x = 91,858.48 × 36,349.87
  4. Step 4: Simplify right side
    66,564.64x = 3,339,043,806.40
  5. Step 5: Solve for x
    x = 3,339,043,806.40/66,564.64
  6. Step 6: Final answer
    x = 50,162.43

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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.