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Finding the Fourth Proportional to 57,896.20, 86,844.30 and 28,371.70

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Solution

The fourth proportional to 57,896.20, 86,844.30 and 28,371.70 is: 42,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,896.20 : 86,844.30 = 28,371.70 : x
  2. Step 2: Convert to fraction form
    57,896.20/86,844.30 = 28,371.70/x
  3. Step 3: Cross multiply
    57,896.20x = 86,844.30 × 28,371.70
  4. Step 4: Simplify right side
    57,896.20x = 2,463,920,426.31
  5. Step 5: Solve for x
    x = 2,463,920,426.31/57,896.20
  6. Step 6: Final answer
    x = 42,557.55

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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.