Home / 56,257.92-84,365.76-21,178.56

Finding the Fourth Proportional to 56,257.92, 84,365.76 and 21,178.56

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Solution

The fourth proportional to 56,257.92, 84,365.76 and 21,178.56 is: 31,759.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,257.92 : 84,365.76 = 21,178.56 : x
  2. Step 2: Convert to fraction form
    56,257.92/84,365.76 = 21,178.56/x
  3. Step 3: Cross multiply
    56,257.92x = 84,365.76 × 21,178.56
  4. Step 4: Simplify right side
    56,257.92x = 1,786,745,310.11
  5. Step 5: Solve for x
    x = 1,786,745,310.11/56,257.92
  6. Step 6: Final answer
    x = 31,759.89

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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.