Home / 87,319.48-131,004.78-28,153.96

Finding the Fourth Proportional to 87,319.48, 131,004.78 and 28,153.96

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Solution

The fourth proportional to 87,319.48, 131,004.78 and 28,153.96 is: 42,239.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319.48 : 131,004.78 = 28,153.96 : x
  2. Step 2: Convert to fraction form
    87,319.48/131,004.78 = 28,153.96/x
  3. Step 3: Cross multiply
    87,319.48x = 131,004.78 × 28,153.96
  4. Step 4: Simplify right side
    87,319.48x = 3,688,303,335.93
  5. Step 5: Solve for x
    x = 3,688,303,335.93/87,319.48
  6. Step 6: Final answer
    x = 42,239.18

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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.