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Finding the Fourth Proportional to 87,352.56, 131,028.72 and 21,688.56

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Solution

The fourth proportional to 87,352.56, 131,028.72 and 21,688.56 is: 32,532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,352.56 : 131,028.72 = 21,688.56 : x
  2. Step 2: Convert to fraction form
    87,352.56/131,028.72 = 21,688.56/x
  3. Step 3: Cross multiply
    87,352.56x = 131,028.72 × 21,688.56
  4. Step 4: Simplify right side
    87,352.56x = 2,841,824,255.44
  5. Step 5: Solve for x
    x = 2,841,824,255.44/87,352.56
  6. Step 6: Final answer
    x = 32,532.81

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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.