Home / 87,834.78-121,212.45-50,109.03

Finding the Fourth Proportional to 87,834.78, 121,212.45 and 50,109.03

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Solution

The fourth proportional to 87,834.78, 121,212.45 and 50,109.03 is: 69,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,834.78 : 121,212.45 = 50,109.03 : x
  2. Step 2: Convert to fraction form
    87,834.78/121,212.45 = 50,109.03/x
  3. Step 3: Cross multiply
    87,834.78x = 121,212.45 × 50,109.03
  4. Step 4: Simplify right side
    87,834.78x = 6,073,838,293.42
  5. Step 5: Solve for x
    x = 6,073,838,293.42/87,834.78
  6. Step 6: Final answer
    x = 69,150.72

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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.