Home / 81,412.20-122,135.72-25,251.08

Finding the Fourth Proportional to 81,412.20, 122,135.72 and 25,251.08

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Solution

The fourth proportional to 81,412.20, 122,135.72 and 25,251.08 is: 37,882.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.20 : 122,135.72 = 25,251.08 : x
  2. Step 2: Convert to fraction form
    81,412.20/122,135.72 = 25,251.08/x
  3. Step 3: Cross multiply
    81,412.20x = 122,135.72 × 25,251.08
  4. Step 4: Simplify right side
    81,412.20x = 3,084,058,099.64
  5. Step 5: Solve for x
    x = 3,084,058,099.64/81,412.20
  6. Step 6: Final answer
    x = 37,882.01

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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.