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Finding the Fourth Proportional to 54,251.60, 81,251.04 and 52,756.80

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Solution

The fourth proportional to 54,251.60, 81,251.04 and 52,756.80 is: 79,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,251.60 : 81,251.04 = 52,756.80 : x
  2. Step 2: Convert to fraction form
    54,251.60/81,251.04 = 52,756.80/x
  3. Step 3: Cross multiply
    54,251.60x = 81,251.04 × 52,756.80
  4. Step 4: Simplify right side
    54,251.60x = 4,286,544,867.07
  5. Step 5: Solve for x
    x = 4,286,544,867.07/54,251.60
  6. Step 6: Final answer
    x = 79,012.32

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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.