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Finding the Fourth Proportional to 81,460.39, 122,181.57 and 21,494.95

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Solution

The fourth proportional to 81,460.39, 122,181.57 and 21,494.95 is: 32,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,460.39 : 122,181.57 = 21,494.95 : x
  2. Step 2: Convert to fraction form
    81,460.39/122,181.57 = 21,494.95/x
  3. Step 3: Cross multiply
    81,460.39x = 122,181.57 × 21,494.95
  4. Step 4: Simplify right side
    81,460.39x = 2,626,286,738.07
  5. Step 5: Solve for x
    x = 2,626,286,738.07/81,460.39
  6. Step 6: Final answer
    x = 32,240.05

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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.