Home / 72,274.05-99,734.91-40,009.86

Finding the Fourth Proportional to 72,274.05, 99,734.91 and 40,009.86

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Solution

The fourth proportional to 72,274.05, 99,734.91 and 40,009.86 is: 55,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,274.05 : 99,734.91 = 40,009.86 : x
  2. Step 2: Convert to fraction form
    72,274.05/99,734.91 = 40,009.86/x
  3. Step 3: Cross multiply
    72,274.05x = 99,734.91 × 40,009.86
  4. Step 4: Simplify right side
    72,274.05x = 3,990,379,786.21
  5. Step 5: Solve for x
    x = 3,990,379,786.21/72,274.05
  6. Step 6: Final answer
    x = 55,211.79

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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.