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Finding the Fourth Proportional to 45,482.93, 68,231.69 and 19,191.54

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Solution

The fourth proportional to 45,482.93, 68,231.69 and 19,191.54 is: 28,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,482.93 : 68,231.69 = 19,191.54 : x
  2. Step 2: Convert to fraction form
    45,482.93/68,231.69 = 19,191.54/x
  3. Step 3: Cross multiply
    45,482.93x = 68,231.69 × 19,191.54
  4. Step 4: Simplify right side
    45,482.93x = 1,309,471,439.78
  5. Step 5: Solve for x
    x = 1,309,471,439.78/45,482.93
  6. Step 6: Final answer
    x = 28,790.39

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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.