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Finding the Fourth Proportional to 54,951.20, 82,390.80 and 21,651.20

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Solution

The fourth proportional to 54,951.20, 82,390.80 and 21,651.20 is: 32,462.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,951.20 : 82,390.80 = 21,651.20 : x
  2. Step 2: Convert to fraction form
    54,951.20/82,390.80 = 21,651.20/x
  3. Step 3: Cross multiply
    54,951.20x = 82,390.80 × 21,651.20
  4. Step 4: Simplify right side
    54,951.20x = 1,783,859,688.96
  5. Step 5: Solve for x
    x = 1,783,859,688.96/54,951.20
  6. Step 6: Final answer
    x = 32,462.62

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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.