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Finding the Fourth Proportional to 89,608.80, 123,659.16 and 49,321.70

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Solution

The fourth proportional to 89,608.80, 123,659.16 and 49,321.70 is: 68,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,608.80 : 123,659.16 = 49,321.70 : x
  2. Step 2: Convert to fraction form
    89,608.80/123,659.16 = 49,321.70/x
  3. Step 3: Cross multiply
    89,608.80x = 123,659.16 × 49,321.70
  4. Step 4: Simplify right side
    89,608.80x = 6,099,079,991.77
  5. Step 5: Solve for x
    x = 6,099,079,991.77/89,608.80
  6. Step 6: Final answer
    x = 68,063.40

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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.