Home / 87,885.30-121,289.18-49,651.86

Finding the Fourth Proportional to 87,885.30, 121,289.18 and 49,651.86

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Solution

The fourth proportional to 87,885.30, 121,289.18 and 49,651.86 is: 68,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.30 : 121,289.18 = 49,651.86 : x
  2. Step 2: Convert to fraction form
    87,885.30/121,289.18 = 49,651.86/x
  3. Step 3: Cross multiply
    87,885.30x = 121,289.18 × 49,651.86
  4. Step 4: Simplify right side
    87,885.30x = 6,022,233,384.87
  5. Step 5: Solve for x
    x = 6,022,233,384.87/87,885.30
  6. Step 6: Final answer
    x = 68,523.78

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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.