Home / 87,339.60-131,037.09-31,178.49

Finding the Fourth Proportional to 87,339.60, 131,037.09 and 31,178.49

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Solution

The fourth proportional to 87,339.60, 131,037.09 and 31,178.49 is: 46,777.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,339.60 : 131,037.09 = 31,178.49 : x
  2. Step 2: Convert to fraction form
    87,339.60/131,037.09 = 31,178.49/x
  3. Step 3: Cross multiply
    87,339.60x = 131,037.09 × 31,178.49
  4. Step 4: Simplify right side
    87,339.60x = 4,085,538,600.19
  5. Step 5: Solve for x
    x = 4,085,538,600.19/87,339.60
  6. Step 6: Final answer
    x = 46,777.62

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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.