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Finding the Fourth Proportional to 82,628.77, 123,750.92 and 80,355.91

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Solution

The fourth proportional to 82,628.77, 123,750.92 and 80,355.91 is: 120,346.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,628.77 : 123,750.92 = 80,355.91 : x
  2. Step 2: Convert to fraction form
    82,628.77/123,750.92 = 80,355.91/x
  3. Step 3: Cross multiply
    82,628.77x = 123,750.92 × 80,355.91
  4. Step 4: Simplify right side
    82,628.77x = 9,944,116,769.40
  5. Step 5: Solve for x
    x = 9,944,116,769.40/82,628.77
  6. Step 6: Final answer
    x = 120,346.91

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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.