Home / 76,721.76-105,833.61-63,865.85

Finding the Fourth Proportional to 76,721.76, 105,833.61 and 63,865.85

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Solution

The fourth proportional to 76,721.76, 105,833.61 and 63,865.85 is: 88,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,721.76 : 105,833.61 = 63,865.85 : x
  2. Step 2: Convert to fraction form
    76,721.76/105,833.61 = 63,865.85/x
  3. Step 3: Cross multiply
    76,721.76x = 105,833.61 × 63,865.85
  4. Step 4: Simplify right side
    76,721.76x = 6,759,152,932.05
  5. Step 5: Solve for x
    x = 6,759,152,932.05/76,721.76
  6. Step 6: Final answer
    x = 88,099.56

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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.