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Finding the Fourth Proportional to 57,289.54, 85,923.18 and 28,818.90

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Solution

The fourth proportional to 57,289.54, 85,923.18 and 28,818.90 is: 43,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.54 : 85,923.18 = 28,818.90 : x
  2. Step 2: Convert to fraction form
    57,289.54/85,923.18 = 28,818.90/x
  3. Step 3: Cross multiply
    57,289.54x = 85,923.18 × 28,818.90
  4. Step 4: Simplify right side
    57,289.54x = 2,476,211,532.10
  5. Step 5: Solve for x
    x = 2,476,211,532.10/57,289.54
  6. Step 6: Final answer
    x = 43,222.75

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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.