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Finding the Fourth Proportional to 65,090.76, 89,789.07 and 37,863.78

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Solution

The fourth proportional to 65,090.76, 89,789.07 and 37,863.78 is: 52,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,090.76 : 89,789.07 = 37,863.78 : x
  2. Step 2: Convert to fraction form
    65,090.76/89,789.07 = 37,863.78/x
  3. Step 3: Cross multiply
    65,090.76x = 89,789.07 × 37,863.78
  4. Step 4: Simplify right side
    65,090.76x = 3,399,752,954.62
  5. Step 5: Solve for x
    x = 3,399,752,954.62/65,090.76
  6. Step 6: Final answer
    x = 52,230.97

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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.