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Finding the Fourth Proportional to 57,154.20, 85,728.78 and 15,601.20

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Solution

The fourth proportional to 57,154.20, 85,728.78 and 15,601.20 is: 23,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.20 : 85,728.78 = 15,601.20 : x
  2. Step 2: Convert to fraction form
    57,154.20/85,728.78 = 15,601.20/x
  3. Step 3: Cross multiply
    57,154.20x = 85,728.78 × 15,601.20
  4. Step 4: Simplify right side
    57,154.20x = 1,337,471,842.54
  5. Step 5: Solve for x
    x = 1,337,471,842.54/57,154.20
  6. Step 6: Final answer
    x = 23,401.11

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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.