Home / 87,845.58-131,767.94-21,285.72

Finding the Fourth Proportional to 87,845.58, 131,767.94 and 21,285.72

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Solution

The fourth proportional to 87,845.58, 131,767.94 and 21,285.72 is: 31,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,845.58 : 131,767.94 = 21,285.72 : x
  2. Step 2: Convert to fraction form
    87,845.58/131,767.94 = 21,285.72/x
  3. Step 3: Cross multiply
    87,845.58x = 131,767.94 × 21,285.72
  4. Step 4: Simplify right side
    87,845.58x = 2,804,775,698.81
  5. Step 5: Solve for x
    x = 2,804,775,698.81/87,845.58
  6. Step 6: Final answer
    x = 31,928.48

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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.