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Finding the Fourth Proportional to 57,289.46, 85,923.05 and 28,818.82

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Solution

The fourth proportional to 57,289.46, 85,923.05 and 28,818.82 is: 43,222.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.46 : 85,923.05 = 28,818.82 : x
  2. Step 2: Convert to fraction form
    57,289.46/85,923.05 = 28,818.82/x
  3. Step 3: Cross multiply
    57,289.46x = 85,923.05 × 28,818.82
  4. Step 4: Simplify right side
    57,289.46x = 2,476,200,911.80
  5. Step 5: Solve for x
    x = 2,476,200,911.80/57,289.46
  6. Step 6: Final answer
    x = 43,222.63

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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.