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Finding the Fourth Proportional to 66,806.24, 100,213.68 and 22,431.20

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Solution

The fourth proportional to 66,806.24, 100,213.68 and 22,431.20 is: 33,648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806.24 : 100,213.68 = 22,431.20 : x
  2. Step 2: Convert to fraction form
    66,806.24/100,213.68 = 22,431.20/x
  3. Step 3: Cross multiply
    66,806.24x = 100,213.68 × 22,431.20
  4. Step 4: Simplify right side
    66,806.24x = 2,247,913,098.82
  5. Step 5: Solve for x
    x = 2,247,913,098.82/66,806.24
  6. Step 6: Final answer
    x = 33,648.25

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1.5x scale

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.