Home / 87,709.04-131,505.72-31,520.96

Finding the Fourth Proportional to 87,709.04, 131,505.72 and 31,520.96

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Solution

The fourth proportional to 87,709.04, 131,505.72 and 31,520.96 is: 47,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,709.04 : 131,505.72 = 31,520.96 : x
  2. Step 2: Convert to fraction form
    87,709.04/131,505.72 = 31,520.96/x
  3. Step 3: Cross multiply
    87,709.04x = 131,505.72 × 31,520.96
  4. Step 4: Simplify right side
    87,709.04x = 4,145,186,539.89
  5. Step 5: Solve for x
    x = 4,145,186,539.89/87,709.04
  6. Step 6: Final answer
    x = 47,260.65

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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.