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Finding the Fourth Proportional to 54,601.60, 81,844.80 and 21,308.80

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Solution

The fourth proportional to 54,601.60, 81,844.80 and 21,308.80 is: 31,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,601.60 : 81,844.80 = 21,308.80 : x
  2. Step 2: Convert to fraction form
    54,601.60/81,844.80 = 21,308.80/x
  3. Step 3: Cross multiply
    54,601.60x = 81,844.80 × 21,308.80
  4. Step 4: Simplify right side
    54,601.60x = 1,744,014,474.24
  5. Step 5: Solve for x
    x = 1,744,014,474.24/54,601.60
  6. Step 6: Final answer
    x = 31,940.72

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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.