Home / 87,622.20-131,433.30-72,847.80

Finding the Fourth Proportional to 87,622.20, 131,433.30 and 72,847.80

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Solution

The fourth proportional to 87,622.20, 131,433.30 and 72,847.80 is: 109,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,622.20 : 131,433.30 = 72,847.80 : x
  2. Step 2: Convert to fraction form
    87,622.20/131,433.30 = 72,847.80/x
  3. Step 3: Cross multiply
    87,622.20x = 131,433.30 × 72,847.80
  4. Step 4: Simplify right side
    87,622.20x = 9,574,626,751.74
  5. Step 5: Solve for x
    x = 9,574,626,751.74/87,622.20
  6. Step 6: Final answer
    x = 109,271.70

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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.