Home / 77,932.53-107,546.92-42,122.43

Finding the Fourth Proportional to 77,932.53, 107,546.92 and 42,122.43

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Solution

The fourth proportional to 77,932.53, 107,546.92 and 42,122.43 is: 58,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,932.53 : 107,546.92 = 42,122.43 : x
  2. Step 2: Convert to fraction form
    77,932.53/107,546.92 = 42,122.43/x
  3. Step 3: Cross multiply
    77,932.53x = 107,546.92 × 42,122.43
  4. Step 4: Simplify right side
    77,932.53x = 4,530,137,667.67
  5. Step 5: Solve for x
    x = 4,530,137,667.67/77,932.53
  6. Step 6: Final answer
    x = 58,128.97

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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.