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Finding the Fourth Proportional to 54,329.80, 81,494.70 and 52,142.80

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Solution

The fourth proportional to 54,329.80, 81,494.70 and 52,142.80 is: 78,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,329.80 : 81,494.70 = 52,142.80 : x
  2. Step 2: Convert to fraction form
    54,329.80/81,494.70 = 52,142.80/x
  3. Step 3: Cross multiply
    54,329.80x = 81,494.70 × 52,142.80
  4. Step 4: Simplify right side
    54,329.80x = 4,249,361,843.16
  5. Step 5: Solve for x
    x = 4,249,361,843.16/54,329.80
  6. Step 6: Final answer
    x = 78,214.20

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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.