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Finding the Fourth Proportional to 72,009.77, 99,379.08 and 40,183.44

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Solution

The fourth proportional to 72,009.77, 99,379.08 and 40,183.44 is: 55,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.77 : 99,379.08 = 40,183.44 : x
  2. Step 2: Convert to fraction form
    72,009.77/99,379.08 = 40,183.44/x
  3. Step 3: Cross multiply
    72,009.77x = 99,379.08 × 40,183.44
  4. Step 4: Simplify right side
    72,009.77x = 3,993,393,298.44
  5. Step 5: Solve for x
    x = 3,993,393,298.44/72,009.77
  6. Step 6: Final answer
    x = 55,456.27

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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.