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Finding the Fourth Proportional to 76,491.82, 114,640.37 and 43,230.43

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Solution

The fourth proportional to 76,491.82, 114,640.37 and 43,230.43 is: 64,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,491.82 : 114,640.37 = 43,230.43 : x
  2. Step 2: Convert to fraction form
    76,491.82/114,640.37 = 43,230.43/x
  3. Step 3: Cross multiply
    76,491.82x = 114,640.37 × 43,230.43
  4. Step 4: Simplify right side
    76,491.82x = 4,955,951,701.11
  5. Step 5: Solve for x
    x = 4,955,951,701.11/76,491.82
  6. Step 6: Final answer
    x = 64,790.61

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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.