Home / 87,881.86-121,285.68-50,161.78

Finding the Fourth Proportional to 87,881.86, 121,285.68 and 50,161.78

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Solution

The fourth proportional to 87,881.86, 121,285.68 and 50,161.78 is: 69,228.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,881.86 : 121,285.68 = 50,161.78 : x
  2. Step 2: Convert to fraction form
    87,881.86/121,285.68 = 50,161.78/x
  3. Step 3: Cross multiply
    87,881.86x = 121,285.68 × 50,161.78
  4. Step 4: Simplify right side
    87,881.86x = 6,083,905,597.31
  5. Step 5: Solve for x
    x = 6,083,905,597.31/87,881.86
  6. Step 6: Final answer
    x = 69,228.23

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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.