Home / 87,419.44-120,638.64-49,179.02

Finding the Fourth Proportional to 87,419.44, 120,638.64 and 49,179.02

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Solution

The fourth proportional to 87,419.44, 120,638.64 and 49,179.02 is: 67,866.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,419.44 : 120,638.64 = 49,179.02 : x
  2. Step 2: Convert to fraction form
    87,419.44/120,638.64 = 49,179.02/x
  3. Step 3: Cross multiply
    87,419.44x = 120,638.64 × 49,179.02
  4. Step 4: Simplify right side
    87,419.44x = 5,932,889,670.56
  5. Step 5: Solve for x
    x = 5,932,889,670.56/87,419.44
  6. Step 6: Final answer
    x = 67,866.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.