Home / 85,375.76-117,818.48-47,135.36

Finding the Fourth Proportional to 85,375.76, 117,818.48 and 47,135.36

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Solution

The fourth proportional to 85,375.76, 117,818.48 and 47,135.36 is: 65,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,375.76 : 117,818.48 = 47,135.36 : x
  2. Step 2: Convert to fraction form
    85,375.76/117,818.48 = 47,135.36/x
  3. Step 3: Cross multiply
    85,375.76x = 117,818.48 × 47,135.36
  4. Step 4: Simplify right side
    85,375.76x = 5,553,416,469.45
  5. Step 5: Solve for x
    x = 5,553,416,469.45/85,375.76
  6. Step 6: Final answer
    x = 65,046.76

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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.