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Finding the Fourth Proportional to 66,806.28, 100,209.22 and 27,363.40

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Solution

The fourth proportional to 66,806.28, 100,209.22 and 27,363.40 is: 41,045.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806.28 : 100,209.22 = 27,363.40 : x
  2. Step 2: Convert to fraction form
    66,806.28/100,209.22 = 27,363.40/x
  3. Step 3: Cross multiply
    66,806.28x = 100,209.22 × 27,363.40
  4. Step 4: Simplify right side
    66,806.28x = 2,742,064,651.62
  5. Step 5: Solve for x
    x = 2,742,064,651.62/66,806.28
  6. Step 6: Final answer
    x = 41,045.01

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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.