Home / 271,533.72-407,359.16-81,978.36

Finding the Fourth Proportional to 271,533.72, 407,359.16 and 81,978.36

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Solution

The fourth proportional to 271,533.72, 407,359.16 and 81,978.36 is: 122,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,533.72 : 407,359.16 = 81,978.36 : x
  2. Step 2: Convert to fraction form
    271,533.72/407,359.16 = 81,978.36/x
  3. Step 3: Cross multiply
    271,533.72x = 407,359.16 × 81,978.36
  4. Step 4: Simplify right side
    271,533.72x = 33,394,635,867.78
  5. Step 5: Solve for x
    x = 33,394,635,867.78/271,533.72
  6. Step 6: Final answer
    x = 122,985.23

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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.