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Finding the Fourth Proportional to 89,479.75, 123,478.90 and 49,193.22

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Solution

The fourth proportional to 89,479.75, 123,478.90 and 49,193.22 is: 67,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,479.75 : 123,478.90 = 49,193.22 : x
  2. Step 2: Convert to fraction form
    89,479.75/123,478.90 = 49,193.22/x
  3. Step 3: Cross multiply
    89,479.75x = 123,478.90 × 49,193.22
  4. Step 4: Simplify right side
    89,479.75x = 6,074,324,693.06
  5. Step 5: Solve for x
    x = 6,074,324,693.06/89,479.75
  6. Step 6: Final answer
    x = 67,884.91

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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.