Home / 78,866.14-108,835.16-50,571.76

Finding the Fourth Proportional to 78,866.14, 108,835.16 and 50,571.76

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Solution

The fourth proportional to 78,866.14, 108,835.16 and 50,571.76 is: 69,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,866.14 : 108,835.16 = 50,571.76 : x
  2. Step 2: Convert to fraction form
    78,866.14/108,835.16 = 50,571.76/x
  3. Step 3: Cross multiply
    78,866.14x = 108,835.16 × 50,571.76
  4. Step 4: Simplify right side
    78,866.14x = 5,503,985,591.08
  5. Step 5: Solve for x
    x = 5,503,985,591.08/78,866.14
  6. Step 6: Final answer
    x = 69,788.96

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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.