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Finding the Fourth Proportional to 57,008.40, 85,512.56 and 15,455.40

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Solution

The fourth proportional to 57,008.40, 85,512.56 and 15,455.40 is: 23,183.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,008.40 : 85,512.56 = 15,455.40 : x
  2. Step 2: Convert to fraction form
    57,008.40/85,512.56 = 15,455.40/x
  3. Step 3: Cross multiply
    57,008.40x = 85,512.56 × 15,455.40
  4. Step 4: Simplify right side
    57,008.40x = 1,321,630,819.82
  5. Step 5: Solve for x
    x = 1,321,630,819.82/57,008.40
  6. Step 6: Final answer
    x = 23,183.09

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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.