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Finding the Fourth Proportional to 54,581.60, 81,872.40 and 17,645.60

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Solution

The fourth proportional to 54,581.60, 81,872.40 and 17,645.60 is: 26,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,581.60 : 81,872.40 = 17,645.60 : x
  2. Step 2: Convert to fraction form
    54,581.60/81,872.40 = 17,645.60/x
  3. Step 3: Cross multiply
    54,581.60x = 81,872.40 × 17,645.60
  4. Step 4: Simplify right side
    54,581.60x = 1,444,687,621.44
  5. Step 5: Solve for x
    x = 1,444,687,621.44/54,581.60
  6. Step 6: Final answer
    x = 26,468.40

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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.