Home / 72,015.26-99,383.10-40,183.48

Finding the Fourth Proportional to 72,015.26, 99,383.10 and 40,183.48

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Solution

The fourth proportional to 72,015.26, 99,383.10 and 40,183.48 is: 55,454.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,015.26 : 99,383.10 = 40,183.48 : x
  2. Step 2: Convert to fraction form
    72,015.26/99,383.10 = 40,183.48/x
  3. Step 3: Cross multiply
    72,015.26x = 99,383.10 × 40,183.48
  4. Step 4: Simplify right side
    72,015.26x = 3,993,558,811.19
  5. Step 5: Solve for x
    x = 3,993,558,811.19/72,015.26
  6. Step 6: Final answer
    x = 55,454.34

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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.