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Finding the Fourth Proportional to 57,160.86, 85,752.81 and 20,250.78

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Solution

The fourth proportional to 57,160.86, 85,752.81 and 20,250.78 is: 30,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,160.86 : 85,752.81 = 20,250.78 : x
  2. Step 2: Convert to fraction form
    57,160.86/85,752.81 = 20,250.78/x
  3. Step 3: Cross multiply
    57,160.86x = 85,752.81 × 20,250.78
  4. Step 4: Simplify right side
    57,160.86x = 1,736,561,289.69
  5. Step 5: Solve for x
    x = 1,736,561,289.69/57,160.86
  6. Step 6: Final answer
    x = 30,380.25

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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.