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Finding the Fourth Proportional to 85,608.74, 118,137.79 and 47,367.29

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Solution

The fourth proportional to 85,608.74, 118,137.79 and 47,367.29 is: 65,365.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.74 : 118,137.79 = 47,367.29 : x
  2. Step 2: Convert to fraction form
    85,608.74/118,137.79 = 47,367.29/x
  3. Step 3: Cross multiply
    85,608.74x = 118,137.79 × 47,367.29
  4. Step 4: Simplify right side
    85,608.74x = 5,595,867,313.44
  5. Step 5: Solve for x
    x = 5,595,867,313.44/85,608.74
  6. Step 6: Final answer
    x = 65,365.61

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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.