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Finding the Fourth Proportional to 66,236.56, 91,406 and 37,561.64

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Solution

The fourth proportional to 66,236.56, 91,406 and 37,561.64 is: 51,834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,236.56 : 91,406 = 37,561.64 : x
  2. Step 2: Convert to fraction form
    66,236.56/91,406 = 37,561.64/x
  3. Step 3: Cross multiply
    66,236.56x = 91,406 × 37,561.64
  4. Step 4: Simplify right side
    66,236.56x = 3,433,359,265.84
  5. Step 5: Solve for x
    x = 3,433,359,265.84/66,236.56
  6. Step 6: Final answer
    x = 51,834.81

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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.