Home / 40,025,858.36-55,235,731.76-21,691,143.86

Finding the Fourth Proportional to 40,025,858.36, 55,235,731.76 and 21,691,143.86

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Solution

The fourth proportional to 40,025,858.36, 55,235,731.76 and 21,691,143.86 is: 29,933,804.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025,858.36 : 55,235,731.76 = 21,691,143.86 : x
  2. Step 2: Convert to fraction form
    40,025,858.36/55,235,731.76 = 21,691,143.86/x
  3. Step 3: Cross multiply
    40,025,858.36x = 55,235,731.76 × 21,691,143.86
  4. Step 4: Simplify right side
    40,025,858.36x = 1,198,126,203,433,896.75
  5. Step 5: Solve for x
    x = 1,198,126,203,433,896.75/40,025,858.36
  6. Step 6: Final answer
    x = 29,933,804.11

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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.