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Finding the Fourth Proportional to 85,481.48, 117,963.78 and 47,243.60

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Solution

The fourth proportional to 85,481.48, 117,963.78 and 47,243.60 is: 65,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,481.48 : 117,963.78 = 47,243.60 : x
  2. Step 2: Convert to fraction form
    85,481.48/117,963.78 = 47,243.60/x
  3. Step 3: Cross multiply
    85,481.48x = 117,963.78 × 47,243.60
  4. Step 4: Simplify right side
    85,481.48x = 5,573,033,636.81
  5. Step 5: Solve for x
    x = 5,573,033,636.81/85,481.48
  6. Step 6: Final answer
    x = 65,195.80

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1.5x scale

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.