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Finding the Fourth Proportional to 60,129.92, 90,169.49 and 18,015.98

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Solution

The fourth proportional to 60,129.92, 90,169.49 and 18,015.98 is: 27,016.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,129.92 : 90,169.49 = 18,015.98 : x
  2. Step 2: Convert to fraction form
    60,129.92/90,169.49 = 18,015.98/x
  3. Step 3: Cross multiply
    60,129.92x = 90,169.49 × 18,015.98
  4. Step 4: Simplify right side
    60,129.92x = 1,624,491,998.91
  5. Step 5: Solve for x
    x = 1,624,491,998.91/60,129.92
  6. Step 6: Final answer
    x = 27,016.37

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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.