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Finding the Fourth Proportional to 66,812.78, 100,219.10 and 27,369.96

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Solution

The fourth proportional to 66,812.78, 100,219.10 and 27,369.96 is: 41,054.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,812.78 : 100,219.10 = 27,369.96 : x
  2. Step 2: Convert to fraction form
    66,812.78/100,219.10 = 27,369.96/x
  3. Step 3: Cross multiply
    66,812.78x = 100,219.10 × 27,369.96
  4. Step 4: Simplify right side
    66,812.78x = 2,742,992,621.39
  5. Step 5: Solve for x
    x = 2,742,992,621.39/66,812.78
  6. Step 6: Final answer
    x = 41,054.91

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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.