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Finding the Fourth Proportional to 60,532.75, 90,813.69 and 18,979.75

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Solution

The fourth proportional to 60,532.75, 90,813.69 and 18,979.75 is: 28,474.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,532.75 : 90,813.69 = 18,979.75 : x
  2. Step 2: Convert to fraction form
    60,532.75/90,813.69 = 18,979.75/x
  3. Step 3: Cross multiply
    60,532.75x = 90,813.69 × 18,979.75
  4. Step 4: Simplify right side
    60,532.75x = 1,723,621,246.29
  5. Step 5: Solve for x
    x = 1,723,621,246.29/60,532.75
  6. Step 6: Final answer
    x = 28,474.19

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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.