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Finding the Fourth Proportional to 54,217.80, 81,423.90 and 52,468.20

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Solution

The fourth proportional to 54,217.80, 81,423.90 and 52,468.20 is: 78,796.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,217.80 : 81,423.90 = 52,468.20 : x
  2. Step 2: Convert to fraction form
    54,217.80/81,423.90 = 52,468.20/x
  3. Step 3: Cross multiply
    54,217.80x = 81,423.90 × 52,468.20
  4. Step 4: Simplify right side
    54,217.80x = 4,272,165,469.98
  5. Step 5: Solve for x
    x = 4,272,165,469.98/54,217.80
  6. Step 6: Final answer
    x = 78,796.36

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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.