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Finding the Fourth Proportional to 69,187.44, 95,478.84 and 40,121.44

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Solution

The fourth proportional to 69,187.44, 95,478.84 and 40,121.44 is: 55,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,187.44 : 95,478.84 = 40,121.44 : x
  2. Step 2: Convert to fraction form
    69,187.44/95,478.84 = 40,121.44/x
  3. Step 3: Cross multiply
    69,187.44x = 95,478.84 × 40,121.44
  4. Step 4: Simplify right side
    69,187.44x = 3,830,748,550.33
  5. Step 5: Solve for x
    x = 3,830,748,550.33/69,187.44
  6. Step 6: Final answer
    x = 55,367.69

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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.