Home / 76,942.30-115,343.79-30,182.62

Finding the Fourth Proportional to 76,942.30, 115,343.79 and 30,182.62

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Solution

The fourth proportional to 76,942.30, 115,343.79 and 30,182.62 is: 45,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,942.30 : 115,343.79 = 30,182.62 : x
  2. Step 2: Convert to fraction form
    76,942.30/115,343.79 = 30,182.62/x
  3. Step 3: Cross multiply
    76,942.30x = 115,343.79 × 30,182.62
  4. Step 4: Simplify right side
    76,942.30x = 3,481,377,782.93
  5. Step 5: Solve for x
    x = 3,481,377,782.93/76,942.30
  6. Step 6: Final answer
    x = 45,246.60

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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.