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Finding the Fourth Proportional to 87,633.60, 131,450.40 and 72,859.20

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Solution

The fourth proportional to 87,633.60, 131,450.40 and 72,859.20 is: 109,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,633.60 : 131,450.40 = 72,859.20 : x
  2. Step 2: Convert to fraction form
    87,633.60/131,450.40 = 72,859.20/x
  3. Step 3: Cross multiply
    87,633.60x = 131,450.40 × 72,859.20
  4. Step 4: Simplify right side
    87,633.60x = 9,577,370,983.68
  5. Step 5: Solve for x
    x = 9,577,370,983.68/87,633.60
  6. Step 6: Final answer
    x = 109,288.80

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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.