Home / 87,912.59-131,889.63-28,748.03

Finding the Fourth Proportional to 87,912.59, 131,889.63 and 28,748.03

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Solution

The fourth proportional to 87,912.59, 131,889.63 and 28,748.03 is: 43,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,912.59 : 131,889.63 = 28,748.03 : x
  2. Step 2: Convert to fraction form
    87,912.59/131,889.63 = 28,748.03/x
  3. Step 3: Cross multiply
    87,912.59x = 131,889.63 × 28,748.03
  4. Step 4: Simplify right side
    87,912.59x = 3,791,567,039.93
  5. Step 5: Solve for x
    x = 3,791,567,039.93/87,912.59
  6. Step 6: Final answer
    x = 43,128.83

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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.