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Finding the Fourth Proportional to 57,732.70, 86,518.05 and 45,906.70

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Solution

The fourth proportional to 57,732.70, 86,518.05 and 45,906.70 is: 68,795.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,732.70 : 86,518.05 = 45,906.70 : x
  2. Step 2: Convert to fraction form
    57,732.70/86,518.05 = 45,906.70/x
  3. Step 3: Cross multiply
    57,732.70x = 86,518.05 × 45,906.70
  4. Step 4: Simplify right side
    57,732.70x = 3,971,758,165.94
  5. Step 5: Solve for x
    x = 3,971,758,165.94/57,732.70
  6. Step 6: Final answer
    x = 68,795.64

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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.