Home / 102,771.54-141,821.73-57,449.61

Finding the Fourth Proportional to 102,771.54, 141,821.73 and 57,449.61

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Solution

The fourth proportional to 102,771.54, 141,821.73 and 57,449.61 is: 79,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,771.54 : 141,821.73 = 57,449.61 : x
  2. Step 2: Convert to fraction form
    102,771.54/141,821.73 = 57,449.61/x
  3. Step 3: Cross multiply
    102,771.54x = 141,821.73 × 57,449.61
  4. Step 4: Simplify right side
    102,771.54x = 8,147,603,078.03
  5. Step 5: Solve for x
    x = 8,147,603,078.03/102,771.54
  6. Step 6: Final answer
    x = 79,278.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.