Home / 81,945.20-122,903.45-22,785.48

Finding the Fourth Proportional to 81,945.20, 122,903.45 and 22,785.48

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Solution

The fourth proportional to 81,945.20, 122,903.45 and 22,785.48 is: 34,174.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,945.20 : 122,903.45 = 22,785.48 : x
  2. Step 2: Convert to fraction form
    81,945.20/122,903.45 = 22,785.48/x
  3. Step 3: Cross multiply
    81,945.20x = 122,903.45 × 22,785.48
  4. Step 4: Simplify right side
    81,945.20x = 2,800,413,987.98
  5. Step 5: Solve for x
    x = 2,800,413,987.98/81,945.20
  6. Step 6: Final answer
    x = 34,174.23

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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.