Home / 87,894.12-121,287.87-49,129.41

Finding the Fourth Proportional to 87,894.12, 121,287.87 and 49,129.41

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Solution

The fourth proportional to 87,894.12, 121,287.87 and 49,129.41 is: 67,795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,894.12 : 121,287.87 = 49,129.41 : x
  2. Step 2: Convert to fraction form
    87,894.12/121,287.87 = 49,129.41/x
  3. Step 3: Cross multiply
    87,894.12x = 121,287.87 × 49,129.41
  4. Step 4: Simplify right side
    87,894.12x = 5,958,801,493.26
  5. Step 5: Solve for x
    x = 5,958,801,493.26/87,894.12
  6. Step 6: Final answer
    x = 67,795.22

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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.