Home / 87,650.40-131,389.20-43,240.80

Finding the Fourth Proportional to 87,650.40, 131,389.20 and 43,240.80

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Solution

The fourth proportional to 87,650.40, 131,389.20 and 43,240.80 is: 64,818.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,650.40 : 131,389.20 = 43,240.80 : x
  2. Step 2: Convert to fraction form
    87,650.40/131,389.20 = 43,240.80/x
  3. Step 3: Cross multiply
    87,650.40x = 131,389.20 × 43,240.80
  4. Step 4: Simplify right side
    87,650.40x = 5,681,374,119.36
  5. Step 5: Solve for x
    x = 5,681,374,119.36/87,650.40
  6. Step 6: Final answer
    x = 64,818.58

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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.