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Finding the Fourth Proportional to 66,485.01, 91,745.56 and 37,800.69

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Solution

The fourth proportional to 66,485.01, 91,745.56 and 37,800.69 is: 52,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.01 : 91,745.56 = 37,800.69 : x
  2. Step 2: Convert to fraction form
    66,485.01/91,745.56 = 37,800.69/x
  3. Step 3: Cross multiply
    66,485.01x = 91,745.56 × 37,800.69
  4. Step 4: Simplify right side
    66,485.01x = 3,468,045,175.64
  5. Step 5: Solve for x
    x = 3,468,045,175.64/66,485.01
  6. Step 6: Final answer
    x = 52,162.81

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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.