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Finding the Fourth Proportional to 98,576.72, 147,843.48 and 28,440.80

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Solution

The fourth proportional to 98,576.72, 147,843.48 and 28,440.80 is: 42,654.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,576.72 : 147,843.48 = 28,440.80 : x
  2. Step 2: Convert to fraction form
    98,576.72/147,843.48 = 28,440.80/x
  3. Step 3: Cross multiply
    98,576.72x = 147,843.48 × 28,440.80
  4. Step 4: Simplify right side
    98,576.72x = 4,204,786,845.98
  5. Step 5: Solve for x
    x = 4,204,786,845.98/98,576.72
  6. Step 6: Final answer
    x = 42,654.97

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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.