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Finding the Fourth Proportional to 54,951.81, 82,478.74 and 21,694.83

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Solution

The fourth proportional to 54,951.81, 82,478.74 and 21,694.83 is: 32,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,951.81 : 82,478.74 = 21,694.83 : x
  2. Step 2: Convert to fraction form
    54,951.81/82,478.74 = 21,694.83/x
  3. Step 3: Cross multiply
    54,951.81x = 82,478.74 × 21,694.83
  4. Step 4: Simplify right side
    54,951.81x = 1,789,362,242.91
  5. Step 5: Solve for x
    x = 1,789,362,242.91/54,951.81
  6. Step 6: Final answer
    x = 32,562.39

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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.