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Finding the Fourth Proportional to 70,003.87, 96,601.84 and 39,785.20

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Solution

The fourth proportional to 70,003.87, 96,601.84 and 39,785.20 is: 54,901.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,003.87 : 96,601.84 = 39,785.20 : x
  2. Step 2: Convert to fraction form
    70,003.87/96,601.84 = 39,785.20/x
  3. Step 3: Cross multiply
    70,003.87x = 96,601.84 × 39,785.20
  4. Step 4: Simplify right side
    70,003.87x = 3,843,323,183.80
  5. Step 5: Solve for x
    x = 3,843,323,183.80/70,003.87
  6. Step 6: Final answer
    x = 54,901.58

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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.