Home / 87,622.20-131,465.70-28,459.80

Finding the Fourth Proportional to 87,622.20, 131,465.70 and 28,459.80

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Solution

The fourth proportional to 87,622.20, 131,465.70 and 28,459.80 is: 42,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,622.20 : 131,465.70 = 28,459.80 : x
  2. Step 2: Convert to fraction form
    87,622.20/131,465.70 = 28,459.80/x
  3. Step 3: Cross multiply
    87,622.20x = 131,465.70 × 28,459.80
  4. Step 4: Simplify right side
    87,622.20x = 3,741,487,528.86
  5. Step 5: Solve for x
    x = 3,741,487,528.86/87,622.20
  6. Step 6: Final answer
    x = 42,700.22

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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.