Home / 271,534.72-407,360.66-81,979.36

Finding the Fourth Proportional to 271,534.72, 407,360.66 and 81,979.36

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Solution

The fourth proportional to 271,534.72, 407,360.66 and 81,979.36 is: 122,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,534.72 : 407,360.66 = 81,979.36 : x
  2. Step 2: Convert to fraction form
    271,534.72/407,360.66 = 81,979.36/x
  3. Step 3: Cross multiply
    271,534.72x = 407,360.66 × 81,979.36
  4. Step 4: Simplify right side
    271,534.72x = 33,395,166,195.98
  5. Step 5: Solve for x
    x = 33,395,166,195.98/271,534.72
  6. Step 6: Final answer
    x = 122,986.73

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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.