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Finding the Fourth Proportional to 45,295.46, 67,921.32 and 18,993.14

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Solution

The fourth proportional to 45,295.46, 67,921.32 and 18,993.14 is: 28,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,295.46 : 67,921.32 = 18,993.14 : x
  2. Step 2: Convert to fraction form
    45,295.46/67,921.32 = 18,993.14/x
  3. Step 3: Cross multiply
    45,295.46x = 67,921.32 × 18,993.14
  4. Step 4: Simplify right side
    45,295.46x = 1,290,039,139.74
  5. Step 5: Solve for x
    x = 1,290,039,139.74/45,295.46
  6. Step 6: Final answer
    x = 28,480.54

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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.