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Finding the Fourth Proportional to 66,149.96, 99,230 and 18,764.24

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Solution

The fourth proportional to 66,149.96, 99,230 and 18,764.24 is: 28,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,149.96 : 99,230 = 18,764.24 : x
  2. Step 2: Convert to fraction form
    66,149.96/99,230 = 18,764.24/x
  3. Step 3: Cross multiply
    66,149.96x = 99,230 × 18,764.24
  4. Step 4: Simplify right side
    66,149.96x = 1,861,975,535.20
  5. Step 5: Solve for x
    x = 1,861,975,535.20/66,149.96
  6. Step 6: Final answer
    x = 28,147.80

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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.