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Finding the Fourth Proportional to 69,443.76, 95,825.54 and 38,811.20

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Solution

The fourth proportional to 69,443.76, 95,825.54 and 38,811.20 is: 53,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,443.76 : 95,825.54 = 38,811.20 : x
  2. Step 2: Convert to fraction form
    69,443.76/95,825.54 = 38,811.20/x
  3. Step 3: Cross multiply
    69,443.76x = 95,825.54 × 38,811.20
  4. Step 4: Simplify right side
    69,443.76x = 3,719,104,198.05
  5. Step 5: Solve for x
    x = 3,719,104,198.05/69,443.76
  6. Step 6: Final answer
    x = 53,555.63

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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.