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Finding the Fourth Proportional to 57,015.70, 78,662.40 and 36,898

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Solution

The fourth proportional to 57,015.70, 78,662.40 and 36,898 is: 50,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,015.70 : 78,662.40 = 36,898 : x
  2. Step 2: Convert to fraction form
    57,015.70/78,662.40 = 36,898/x
  3. Step 3: Cross multiply
    57,015.70x = 78,662.40 × 36,898
  4. Step 4: Simplify right side
    57,015.70x = 2,902,485,235.20
  5. Step 5: Solve for x
    x = 2,902,485,235.20/57,015.70
  6. Step 6: Final answer
    x = 50,906.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.