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Finding the Fourth Proportional to 66,811.50, 100,129.50 and 37,243.26

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Solution

The fourth proportional to 66,811.50, 100,129.50 and 37,243.26 is: 55,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.50 : 100,129.50 = 37,243.26 : x
  2. Step 2: Convert to fraction form
    66,811.50/100,129.50 = 37,243.26/x
  3. Step 3: Cross multiply
    66,811.50x = 100,129.50 × 37,243.26
  4. Step 4: Simplify right side
    66,811.50x = 3,729,149,002.17
  5. Step 5: Solve for x
    x = 3,729,149,002.17/66,811.50
  6. Step 6: Final answer
    x = 55,815.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.