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Finding the Fourth Proportional to 57,771.36, 86,627.88 and 28,144.80

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Solution

The fourth proportional to 57,771.36, 86,627.88 and 28,144.80 is: 42,202.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.36 : 86,627.88 = 28,144.80 : x
  2. Step 2: Convert to fraction form
    57,771.36/86,627.88 = 28,144.80/x
  3. Step 3: Cross multiply
    57,771.36x = 86,627.88 × 28,144.80
  4. Step 4: Simplify right side
    57,771.36x = 2,438,124,357.02
  5. Step 5: Solve for x
    x = 2,438,124,357.02/57,771.36
  6. Step 6: Final answer
    x = 42,202.99

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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.