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Finding the Fourth Proportional to 54,195.60, 81,147.60 and 42,434.40

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Solution

The fourth proportional to 54,195.60, 81,147.60 and 42,434.40 is: 63,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,195.60 : 81,147.60 = 42,434.40 : x
  2. Step 2: Convert to fraction form
    54,195.60/81,147.60 = 42,434.40/x
  3. Step 3: Cross multiply
    54,195.60x = 81,147.60 × 42,434.40
  4. Step 4: Simplify right side
    54,195.60x = 3,443,449,717.44
  5. Step 5: Solve for x
    x = 3,443,449,717.44/54,195.60
  6. Step 6: Final answer
    x = 63,537.44

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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.