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Finding the Fourth Proportional to 89,797.65, 123,921.71 and 49,512.85

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Solution

The fourth proportional to 89,797.65, 123,921.71 and 49,512.85 is: 68,328.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,797.65 : 123,921.71 = 49,512.85 : x
  2. Step 2: Convert to fraction form
    89,797.65/123,921.71 = 49,512.85/x
  3. Step 3: Cross multiply
    89,797.65x = 123,921.71 × 49,512.85
  4. Step 4: Simplify right side
    89,797.65x = 6,135,716,852.95
  5. Step 5: Solve for x
    x = 6,135,716,852.95/89,797.65
  6. Step 6: Final answer
    x = 68,328.26

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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.