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Finding the Fourth Proportional to 57,122.88, 85,535.28 and 45,968.64

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Solution

The fourth proportional to 57,122.88, 85,535.28 and 45,968.64 is: 68,833.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,122.88 : 85,535.28 = 45,968.64 : x
  2. Step 2: Convert to fraction form
    57,122.88/85,535.28 = 45,968.64/x
  3. Step 3: Cross multiply
    57,122.88x = 85,535.28 × 45,968.64
  4. Step 4: Simplify right side
    57,122.88x = 3,931,940,493.62
  5. Step 5: Solve for x
    x = 3,931,940,493.62/57,122.88
  6. Step 6: Final answer
    x = 68,833.02

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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.