Home / 78,087.87-117,179.97-30,694.62

Finding the Fourth Proportional to 78,087.87, 117,179.97 and 30,694.62

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Solution

The fourth proportional to 78,087.87, 117,179.97 and 30,694.62 is: 46,060.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,087.87 : 117,179.97 = 30,694.62 : x
  2. Step 2: Convert to fraction form
    78,087.87/117,179.97 = 30,694.62/x
  3. Step 3: Cross multiply
    78,087.87x = 117,179.97 × 30,694.62
  4. Step 4: Simplify right side
    78,087.87x = 3,596,794,650.76
  5. Step 5: Solve for x
    x = 3,596,794,650.76/78,087.87
  6. Step 6: Final answer
    x = 46,060.86

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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.