Home / 76,963.05-115,280.55-67,121.55

Finding the Fourth Proportional to 76,963.05, 115,280.55 and 67,121.55

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Solution

The fourth proportional to 76,963.05, 115,280.55 and 67,121.55 is: 100,539.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,963.05 : 115,280.55 = 67,121.55 : x
  2. Step 2: Convert to fraction form
    76,963.05/115,280.55 = 67,121.55/x
  3. Step 3: Cross multiply
    76,963.05x = 115,280.55 × 67,121.55
  4. Step 4: Simplify right side
    76,963.05x = 7,737,809,200.85
  5. Step 5: Solve for x
    x = 7,737,809,200.85/76,963.05
  6. Step 6: Final answer
    x = 100,539.27

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1.5x scale

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.