Home / 85,439.61-117,906.20-47,201.79

Finding the Fourth Proportional to 85,439.61, 117,906.20 and 47,201.79

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Solution

The fourth proportional to 85,439.61, 117,906.20 and 47,201.79 is: 65,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,439.61 : 117,906.20 = 47,201.79 : x
  2. Step 2: Convert to fraction form
    85,439.61/117,906.20 = 47,201.79/x
  3. Step 3: Cross multiply
    85,439.61x = 117,906.20 × 47,201.79
  4. Step 4: Simplify right side
    85,439.61x = 5,565,383,456.09
  5. Step 5: Solve for x
    x = 5,565,383,456.09/85,439.61
  6. Step 6: Final answer
    x = 65,138.21

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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.