Home / 89,789.28-123,903.54-49,500.78

Finding the Fourth Proportional to 89,789.28, 123,903.54 and 49,500.78

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Solution

The fourth proportional to 89,789.28, 123,903.54 and 49,500.78 is: 68,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,789.28 : 123,903.54 = 49,500.78 : x
  2. Step 2: Convert to fraction form
    89,789.28/123,903.54 = 49,500.78/x
  3. Step 3: Cross multiply
    89,789.28x = 123,903.54 × 49,500.78
  4. Step 4: Simplify right side
    89,789.28x = 6,133,321,874.76
  5. Step 5: Solve for x
    x = 6,133,321,874.76/89,789.28
  6. Step 6: Final answer
    x = 68,307.95

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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.