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Finding the Fourth Proportional to 54,329.60, 81,321.60 and 38,777.60

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Solution

The fourth proportional to 54,329.60, 81,321.60 and 38,777.60 is: 58,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,329.60 : 81,321.60 = 38,777.60 : x
  2. Step 2: Convert to fraction form
    54,329.60/81,321.60 = 38,777.60/x
  3. Step 3: Cross multiply
    54,329.60x = 81,321.60 × 38,777.60
  4. Step 4: Simplify right side
    54,329.60x = 3,153,456,476.16
  5. Step 5: Solve for x
    x = 3,153,456,476.16/54,329.60
  6. Step 6: Final answer
    x = 58,043.06

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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.