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Finding the Fourth Proportional to 54,596.40, 81,845.88 and 21,308.73

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Solution

The fourth proportional to 54,596.40, 81,845.88 and 21,308.73 is: 31,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,596.40 : 81,845.88 = 21,308.73 : x
  2. Step 2: Convert to fraction form
    54,596.40/81,845.88 = 21,308.73/x
  3. Step 3: Cross multiply
    54,596.40x = 81,845.88 × 21,308.73
  4. Step 4: Simplify right side
    54,596.40x = 1,744,031,758.53
  5. Step 5: Solve for x
    x = 1,744,031,758.53/54,596.40
  6. Step 6: Final answer
    x = 31,944.08

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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.