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Finding the Fourth Proportional to 101,568.78, 152,046.99 and 54,679.50

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Solution

The fourth proportional to 101,568.78, 152,046.99 and 54,679.50 is: 81,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,568.78 : 152,046.99 = 54,679.50 : x
  2. Step 2: Convert to fraction form
    101,568.78/152,046.99 = 54,679.50/x
  3. Step 3: Cross multiply
    101,568.78x = 152,046.99 × 54,679.50
  4. Step 4: Simplify right side
    101,568.78x = 8,313,853,389.71
  5. Step 5: Solve for x
    x = 8,313,853,389.71/101,568.78
  6. Step 6: Final answer
    x = 81,854.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.