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Finding the Fourth Proportional to 54,313.20, 81,469.80 and 39,452.40

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Solution

The fourth proportional to 54,313.20, 81,469.80 and 39,452.40 is: 59,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,313.20 : 81,469.80 = 39,452.40 : x
  2. Step 2: Convert to fraction form
    54,313.20/81,469.80 = 39,452.40/x
  3. Step 3: Cross multiply
    54,313.20x = 81,469.80 × 39,452.40
  4. Step 4: Simplify right side
    54,313.20x = 3,214,179,137.52
  5. Step 5: Solve for x
    x = 3,214,179,137.52/54,313.20
  6. Step 6: Final answer
    x = 59,178.60

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1.5x scale

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.