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Finding the Fourth Proportional to 87,659.80, 131,489.70 and 25,336.60

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Solution

The fourth proportional to 87,659.80, 131,489.70 and 25,336.60 is: 38,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.80 : 131,489.70 = 25,336.60 : x
  2. Step 2: Convert to fraction form
    87,659.80/131,489.70 = 25,336.60/x
  3. Step 3: Cross multiply
    87,659.80x = 131,489.70 × 25,336.60
  4. Step 4: Simplify right side
    87,659.80x = 3,331,501,933.02
  5. Step 5: Solve for x
    x = 3,331,501,933.02/87,659.80
  6. Step 6: Final answer
    x = 38,004.90

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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.