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Finding the Fourth Proportional to 72,599.39, 100,183.84 and 40,336.28

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Solution

The fourth proportional to 72,599.39, 100,183.84 and 40,336.28 is: 55,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.39 : 100,183.84 = 40,336.28 : x
  2. Step 2: Convert to fraction form
    72,599.39/100,183.84 = 40,336.28/x
  3. Step 3: Cross multiply
    72,599.39x = 100,183.84 × 40,336.28
  4. Step 4: Simplify right side
    72,599.39x = 4,041,043,195.64
  5. Step 5: Solve for x
    x = 4,041,043,195.64/72,599.39
  6. Step 6: Final answer
    x = 55,662.22

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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.