Home / 81,425.34-122,145.30-22,261.32

Finding the Fourth Proportional to 81,425.34, 122,145.30 and 22,261.32

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Solution

The fourth proportional to 81,425.34, 122,145.30 and 22,261.32 is: 33,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,425.34 : 122,145.30 = 22,261.32 : x
  2. Step 2: Convert to fraction form
    81,425.34/122,145.30 = 22,261.32/x
  3. Step 3: Cross multiply
    81,425.34x = 122,145.30 × 22,261.32
  4. Step 4: Simplify right side
    81,425.34x = 2,719,115,609.80
  5. Step 5: Solve for x
    x = 2,719,115,609.80/81,425.34
  6. Step 6: Final answer
    x = 33,393.97

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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.