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Finding the Fourth Proportional to 57,408.70, 85,959.45 and 36,519.10

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Solution

The fourth proportional to 57,408.70, 85,959.45 and 36,519.10 is: 54,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,408.70 : 85,959.45 = 36,519.10 : x
  2. Step 2: Convert to fraction form
    57,408.70/85,959.45 = 36,519.10/x
  3. Step 3: Cross multiply
    57,408.70x = 85,959.45 × 36,519.10
  4. Step 4: Simplify right side
    57,408.70x = 3,139,161,750.50
  5. Step 5: Solve for x
    x = 3,139,161,750.50/57,408.70
  6. Step 6: Final answer
    x = 54,680.94

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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.