Home / 76,845.60-115,091.10-74,185.92

Finding the Fourth Proportional to 76,845.60, 115,091.10 and 74,185.92

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Solution

The fourth proportional to 76,845.60, 115,091.10 and 74,185.92 is: 111,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,845.60 : 115,091.10 = 74,185.92 : x
  2. Step 2: Convert to fraction form
    76,845.60/115,091.10 = 74,185.92/x
  3. Step 3: Cross multiply
    76,845.60x = 115,091.10 × 74,185.92
  4. Step 4: Simplify right side
    76,845.60x = 8,538,139,137.31
  5. Step 5: Solve for x
    x = 8,538,139,137.31/76,845.60
  6. Step 6: Final answer
    x = 111,107.72

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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.