Home / 81,623.30-122,379.87-28,301.54

Finding the Fourth Proportional to 81,623.30, 122,379.87 and 28,301.54

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Solution

The fourth proportional to 81,623.30, 122,379.87 and 28,301.54 is: 42,433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.30 : 122,379.87 = 28,301.54 : x
  2. Step 2: Convert to fraction form
    81,623.30/122,379.87 = 28,301.54/x
  3. Step 3: Cross multiply
    81,623.30x = 122,379.87 × 28,301.54
  4. Step 4: Simplify right side
    81,623.30x = 3,463,538,786.00
  5. Step 5: Solve for x
    x = 3,463,538,786.00/81,623.30
  6. Step 6: Final answer
    x = 42,433.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.