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Finding the Fourth Proportional to 54,295.20, 81,446.85 and 19,230.30

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Solution

The fourth proportional to 54,295.20, 81,446.85 and 19,230.30 is: 28,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,295.20 : 81,446.85 = 19,230.30 : x
  2. Step 2: Convert to fraction form
    54,295.20/81,446.85 = 19,230.30/x
  3. Step 3: Cross multiply
    54,295.20x = 81,446.85 × 19,230.30
  4. Step 4: Simplify right side
    54,295.20x = 1,566,247,359.56
  5. Step 5: Solve for x
    x = 1,566,247,359.56/54,295.20
  6. Step 6: Final answer
    x = 28,846.88

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1.5x scale

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.