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Finding the Fourth Proportional to 57,028.76, 85,539.04 and 17,581.76

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Solution

The fourth proportional to 57,028.76, 85,539.04 and 17,581.76 is: 26,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,028.76 : 85,539.04 = 17,581.76 : x
  2. Step 2: Convert to fraction form
    57,028.76/85,539.04 = 17,581.76/x
  3. Step 3: Cross multiply
    57,028.76x = 85,539.04 × 17,581.76
  4. Step 4: Simplify right side
    57,028.76x = 1,503,926,871.91
  5. Step 5: Solve for x
    x = 1,503,926,871.91/57,028.76
  6. Step 6: Final answer
    x = 26,371.38

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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.