Home / 40,025,865.37-55,235,741.43-21,691,150.87

Finding the Fourth Proportional to 40,025,865.37, 55,235,741.43 and 21,691,150.87

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Solution

The fourth proportional to 40,025,865.37, 55,235,741.43 and 21,691,150.87 is: 29,933,813.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025,865.37 : 55,235,741.43 = 21,691,150.87 : x
  2. Step 2: Convert to fraction form
    40,025,865.37/55,235,741.43 = 21,691,150.87/x
  3. Step 3: Cross multiply
    40,025,865.37x = 55,235,741.43 × 21,691,150.87
  4. Step 4: Simplify right side
    40,025,865.37x = 1,198,126,800,774,439.50
  5. Step 5: Solve for x
    x = 1,198,126,800,774,439.50/40,025,865.37
  6. Step 6: Final answer
    x = 29,933,813.79

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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.