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Finding the Fourth Proportional to 66,989.35, 92,442.90 and 37,917.09

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Solution

The fourth proportional to 66,989.35, 92,442.90 and 37,917.09 is: 52,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.35 : 92,442.90 = 37,917.09 : x
  2. Step 2: Convert to fraction form
    66,989.35/92,442.90 = 37,917.09/x
  3. Step 3: Cross multiply
    66,989.35x = 92,442.90 × 37,917.09
  4. Step 4: Simplify right side
    66,989.35x = 3,505,165,759.16
  5. Step 5: Solve for x
    x = 3,505,165,759.16/66,989.35
  6. Step 6: Final answer
    x = 52,324.22

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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.