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Finding the Fourth Proportional to 71,863.65, 99,174.83 and 40,032.54

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Solution

The fourth proportional to 71,863.65, 99,174.83 and 40,032.54 is: 55,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.65 : 99,174.83 = 40,032.54 : x
  2. Step 2: Convert to fraction form
    71,863.65/99,174.83 = 40,032.54/x
  3. Step 3: Cross multiply
    71,863.65x = 99,174.83 × 40,032.54
  4. Step 4: Simplify right side
    71,863.65x = 3,970,220,148.81
  5. Step 5: Solve for x
    x = 3,970,220,148.81/71,863.65
  6. Step 6: Final answer
    x = 55,246.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.