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Finding the Fourth Proportional to 72,586.81, 108,893.04 and 33,147.91

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Solution

The fourth proportional to 72,586.81, 108,893.04 and 33,147.91 is: 49,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,586.81 : 108,893.04 = 33,147.91 : x
  2. Step 2: Convert to fraction form
    72,586.81/108,893.04 = 33,147.91/x
  3. Step 3: Cross multiply
    72,586.81x = 108,893.04 × 33,147.91
  4. Step 4: Simplify right side
    72,586.81x = 3,609,576,689.55
  5. Step 5: Solve for x
    x = 3,609,576,689.55/72,586.81
  6. Step 6: Final answer
    x = 49,727.72

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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.