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Finding the Fourth Proportional to 57,722.60, 86,600.64 and 28,157.60

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Solution

The fourth proportional to 57,722.60, 86,600.64 and 28,157.60 is: 42,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,722.60 : 86,600.64 = 28,157.60 : x
  2. Step 2: Convert to fraction form
    57,722.60/86,600.64 = 28,157.60/x
  3. Step 3: Cross multiply
    57,722.60x = 86,600.64 × 28,157.60
  4. Step 4: Simplify right side
    57,722.60x = 2,438,466,180.86
  5. Step 5: Solve for x
    x = 2,438,466,180.86/57,722.60
  6. Step 6: Final answer
    x = 42,244.57

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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.