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Finding the Fourth Proportional to 85,481.76, 117,961.19 and 47,242.74

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Solution

The fourth proportional to 85,481.76, 117,961.19 and 47,242.74 is: 65,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,481.76 : 117,961.19 = 47,242.74 : x
  2. Step 2: Convert to fraction form
    85,481.76/117,961.19 = 47,242.74/x
  3. Step 3: Cross multiply
    85,481.76x = 117,961.19 × 47,242.74
  4. Step 4: Simplify right side
    85,481.76x = 5,572,809,829.26
  5. Step 5: Solve for x
    x = 5,572,809,829.26/85,481.76
  6. Step 6: Final answer
    x = 65,192.97

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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.