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Finding the Fourth Proportional to 57,028.87, 85,543.35 and 15,475.87

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Solution

The fourth proportional to 57,028.87, 85,543.35 and 15,475.87 is: 23,213.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,028.87 : 85,543.35 = 15,475.87 : x
  2. Step 2: Convert to fraction form
    57,028.87/85,543.35 = 15,475.87/x
  3. Step 3: Cross multiply
    57,028.87x = 85,543.35 × 15,475.87
  4. Step 4: Simplify right side
    57,028.87x = 1,323,857,763.96
  5. Step 5: Solve for x
    x = 1,323,857,763.96/57,028.87
  6. Step 6: Final answer
    x = 23,213.82

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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.