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Finding the Fourth Proportional to 87,667.20, 131,500.80 and 43,300.80

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Solution

The fourth proportional to 87,667.20, 131,500.80 and 43,300.80 is: 64,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,667.20 : 131,500.80 = 43,300.80 : x
  2. Step 2: Convert to fraction form
    87,667.20/131,500.80 = 43,300.80/x
  3. Step 3: Cross multiply
    87,667.20x = 131,500.80 × 43,300.80
  4. Step 4: Simplify right side
    87,667.20x = 5,694,089,840.64
  5. Step 5: Solve for x
    x = 5,694,089,840.64/87,667.20
  6. Step 6: Final answer
    x = 64,951.20

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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.