Home / 85,103.72-117,440.84-47,377.97

Finding the Fourth Proportional to 85,103.72, 117,440.84 and 47,377.97

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Solution

The fourth proportional to 85,103.72, 117,440.84 and 47,377.97 is: 65,380.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,103.72 : 117,440.84 = 47,377.97 : x
  2. Step 2: Convert to fraction form
    85,103.72/117,440.84 = 47,377.97/x
  3. Step 3: Cross multiply
    85,103.72x = 117,440.84 × 47,377.97
  4. Step 4: Simplify right side
    85,103.72x = 5,564,108,125.54
  5. Step 5: Solve for x
    x = 5,564,108,125.54/85,103.72
  6. Step 6: Final answer
    x = 65,380.32

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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.