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Finding the Fourth Proportional to 69,947.54, 96,523.98 and 39,728.87

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Solution

The fourth proportional to 69,947.54, 96,523.98 and 39,728.87 is: 54,823.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,947.54 : 96,523.98 = 39,728.87 : x
  2. Step 2: Convert to fraction form
    69,947.54/96,523.98 = 39,728.87/x
  3. Step 3: Cross multiply
    69,947.54x = 96,523.98 × 39,728.87
  4. Step 4: Simplify right side
    69,947.54x = 3,834,788,170.68
  5. Step 5: Solve for x
    x = 3,834,788,170.68/69,947.54
  6. Step 6: Final answer
    x = 54,823.78

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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.