Home / 87,620.94-131,392.53-54,339.66

Finding the Fourth Proportional to 87,620.94, 131,392.53 and 54,339.66

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Solution

The fourth proportional to 87,620.94, 131,392.53 and 54,339.66 is: 81,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.94 : 131,392.53 = 54,339.66 : x
  2. Step 2: Convert to fraction form
    87,620.94/131,392.53 = 54,339.66/x
  3. Step 3: Cross multiply
    87,620.94x = 131,392.53 × 54,339.66
  4. Step 4: Simplify right side
    87,620.94x = 7,139,825,406.74
  5. Step 5: Solve for x
    x = 7,139,825,406.74/87,620.94
  6. Step 6: Final answer
    x = 81,485.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.