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Finding the Fourth Proportional to 66,806.78, 100,209.97 and 27,363.90

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Solution

The fourth proportional to 66,806.78, 100,209.97 and 27,363.90 is: 41,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806.78 : 100,209.97 = 27,363.90 : x
  2. Step 2: Convert to fraction form
    66,806.78/100,209.97 = 27,363.90/x
  3. Step 3: Cross multiply
    66,806.78x = 100,209.97 × 27,363.90
  4. Step 4: Simplify right side
    66,806.78x = 2,742,135,461.26
  5. Step 5: Solve for x
    x = 2,742,135,461.26/66,806.78
  6. Step 6: Final answer
    x = 41,045.77

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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.