Home / 81,442.32-122,157.69-25,281.09

Finding the Fourth Proportional to 81,442.32, 122,157.69 and 25,281.09

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Solution

The fourth proportional to 81,442.32, 122,157.69 and 25,281.09 is: 37,919.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,442.32 : 122,157.69 = 25,281.09 : x
  2. Step 2: Convert to fraction form
    81,442.32/122,157.69 = 25,281.09/x
  3. Step 3: Cross multiply
    81,442.32x = 122,157.69 × 25,281.09
  4. Step 4: Simplify right side
    81,442.32x = 3,088,279,555.08
  5. Step 5: Solve for x
    x = 3,088,279,555.08/81,442.32
  6. Step 6: Final answer
    x = 37,919.84

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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.