Home / 89,789.20-123,903.66-49,504.72

Finding the Fourth Proportional to 89,789.20, 123,903.66 and 49,504.72

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Solution

The fourth proportional to 89,789.20, 123,903.66 and 49,504.72 is: 68,313.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,789.20 : 123,903.66 = 49,504.72 : x
  2. Step 2: Convert to fraction form
    89,789.20/123,903.66 = 49,504.72/x
  3. Step 3: Cross multiply
    89,789.20x = 123,903.66 × 49,504.72
  4. Step 4: Simplify right side
    89,789.20x = 6,133,815,995.28
  5. Step 5: Solve for x
    x = 6,133,815,995.28/89,789.20
  6. Step 6: Final answer
    x = 68,313.52

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1.5x scale

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.