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Finding the Fourth Proportional to 68,452.56, 102,445.20 and 57,371.76

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Solution

The fourth proportional to 68,452.56, 102,445.20 and 57,371.76 is: 85,861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,452.56 : 102,445.20 = 57,371.76 : x
  2. Step 2: Convert to fraction form
    68,452.56/102,445.20 = 57,371.76/x
  3. Step 3: Cross multiply
    68,452.56x = 102,445.20 × 57,371.76
  4. Step 4: Simplify right side
    68,452.56x = 5,877,461,427.55
  5. Step 5: Solve for x
    x = 5,877,461,427.55/68,452.56
  6. Step 6: Final answer
    x = 85,861.82

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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.