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Finding the Fourth Proportional to 57,879.83, 86,760.53 and 39,161.84

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Solution

The fourth proportional to 57,879.83, 86,760.53 and 39,161.84 is: 58,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.83 : 86,760.53 = 39,161.84 : x
  2. Step 2: Convert to fraction form
    57,879.83/86,760.53 = 39,161.84/x
  3. Step 3: Cross multiply
    57,879.83x = 86,760.53 × 39,161.84
  4. Step 4: Simplify right side
    57,879.83x = 3,397,701,364.56
  5. Step 5: Solve for x
    x = 3,397,701,364.56/57,879.83
  6. Step 6: Final answer
    x = 58,702.69

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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.