Home / 54,768.15-82,135.80-28,458.54

Finding the Fourth Proportional to 54,768.15, 82,135.80 and 28,458.54

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Solution

The fourth proportional to 54,768.15, 82,135.80 and 28,458.54 is: 42,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,768.15 : 82,135.80 = 28,458.54 : x
  2. Step 2: Convert to fraction form
    54,768.15/82,135.80 = 28,458.54/x
  3. Step 3: Cross multiply
    54,768.15x = 82,135.80 × 28,458.54
  4. Step 4: Simplify right side
    54,768.15x = 2,337,464,949.73
  5. Step 5: Solve for x
    x = 2,337,464,949.73/54,768.15
  6. Step 6: Final answer
    x = 42,679.28

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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.