Home / 81,427.48-122,131.80-22,267.91

Finding the Fourth Proportional to 81,427.48, 122,131.80 and 22,267.91

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Solution

The fourth proportional to 81,427.48, 122,131.80 and 22,267.91 is: 33,399.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.48 : 122,131.80 = 22,267.91 : x
  2. Step 2: Convert to fraction form
    81,427.48/122,131.80 = 22,267.91/x
  3. Step 3: Cross multiply
    81,427.48x = 122,131.80 × 22,267.91
  4. Step 4: Simplify right side
    81,427.48x = 2,719,620,235.87
  5. Step 5: Solve for x
    x = 2,719,620,235.87/81,427.48
  6. Step 6: Final answer
    x = 33,399.29

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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.