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Finding the Fourth Proportional to 69,811.38, 96,323.31 and 39,589.74

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Solution

The fourth proportional to 69,811.38, 96,323.31 and 39,589.74 is: 54,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,811.38 : 96,323.31 = 39,589.74 : x
  2. Step 2: Convert to fraction form
    69,811.38/96,323.31 = 39,589.74/x
  3. Step 3: Cross multiply
    69,811.38x = 96,323.31 × 39,589.74
  4. Step 4: Simplify right side
    69,811.38x = 3,813,414,798.84
  5. Step 5: Solve for x
    x = 3,813,414,798.84/69,811.38
  6. Step 6: Final answer
    x = 54,624.54

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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.