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Finding the Fourth Proportional to 66,224.52, 99,353.34 and 21,853.80

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Solution

The fourth proportional to 66,224.52, 99,353.34 and 21,853.80 is: 32,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,224.52 : 99,353.34 = 21,853.80 : x
  2. Step 2: Convert to fraction form
    66,224.52/99,353.34 = 21,853.80/x
  3. Step 3: Cross multiply
    66,224.52x = 99,353.34 × 21,853.80
  4. Step 4: Simplify right side
    66,224.52x = 2,171,248,021.69
  5. Step 5: Solve for x
    x = 2,171,248,021.69/66,224.52
  6. Step 6: Final answer
    x = 32,786.16

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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.