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Finding the Fourth Proportional to 66,936.32, 100,267.79 and 37,369.91

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Solution

The fourth proportional to 66,936.32, 100,267.79 and 37,369.91 is: 55,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936.32 : 100,267.79 = 37,369.91 : x
  2. Step 2: Convert to fraction form
    66,936.32/100,267.79 = 37,369.91/x
  3. Step 3: Cross multiply
    66,936.32x = 100,267.79 × 37,369.91
  4. Step 4: Simplify right side
    66,936.32x = 3,746,997,880.28
  5. Step 5: Solve for x
    x = 3,746,997,880.28/66,936.32
  6. Step 6: Final answer
    x = 55,978.54

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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.