Home / 87,384.45-131,105.31-28,220.58

Finding the Fourth Proportional to 87,384.45, 131,105.31 and 28,220.58

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Solution

The fourth proportional to 87,384.45, 131,105.31 and 28,220.58 is: 42,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,384.45 : 131,105.31 = 28,220.58 : x
  2. Step 2: Convert to fraction form
    87,384.45/131,105.31 = 28,220.58/x
  3. Step 3: Cross multiply
    87,384.45x = 131,105.31 × 28,220.58
  4. Step 4: Simplify right side
    87,384.45x = 3,699,867,889.28
  5. Step 5: Solve for x
    x = 3,699,867,889.28/87,384.45
  6. Step 6: Final answer
    x = 42,340.12

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1.5x scale

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.