Home / 81,330.43-122,021.69-25,181.63

Finding the Fourth Proportional to 81,330.43, 122,021.69 and 25,181.63

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Solution

The fourth proportional to 81,330.43, 122,021.69 and 25,181.63 is: 37,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.43 : 122,021.69 = 25,181.63 : x
  2. Step 2: Convert to fraction form
    81,330.43/122,021.69 = 25,181.63/x
  3. Step 3: Cross multiply
    81,330.43x = 122,021.69 × 25,181.63
  4. Step 4: Simplify right side
    81,330.43x = 3,072,705,599.14
  5. Step 5: Solve for x
    x = 3,072,705,599.14/81,330.43
  6. Step 6: Final answer
    x = 37,780.52

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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.