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Finding the Fourth Proportional to 66,997.78, 100,366.02 and 37,326.26

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Solution

The fourth proportional to 66,997.78, 100,366.02 and 37,326.26 is: 55,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,997.78 : 100,366.02 = 37,326.26 : x
  2. Step 2: Convert to fraction form
    66,997.78/100,366.02 = 37,326.26/x
  3. Step 3: Cross multiply
    66,997.78x = 100,366.02 × 37,326.26
  4. Step 4: Simplify right side
    66,997.78x = 3,746,288,408.60
  5. Step 5: Solve for x
    x = 3,746,288,408.60/66,997.78
  6. Step 6: Final answer
    x = 55,916.61

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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.