Home / 87,439.68-120,669.48-49,716.36

Finding the Fourth Proportional to 87,439.68, 120,669.48 and 49,716.36

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Solution

The fourth proportional to 87,439.68, 120,669.48 and 49,716.36 is: 68,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,439.68 : 120,669.48 = 49,716.36 : x
  2. Step 2: Convert to fraction form
    87,439.68/120,669.48 = 49,716.36/x
  3. Step 3: Cross multiply
    87,439.68x = 120,669.48 × 49,716.36
  4. Step 4: Simplify right side
    87,439.68x = 5,999,247,308.69
  5. Step 5: Solve for x
    x = 5,999,247,308.69/87,439.68
  6. Step 6: Final answer
    x = 68,610.12

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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.