Home / 56,198.75-84,301.36-21,138.71

Finding the Fourth Proportional to 56,198.75, 84,301.36 and 21,138.71

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Solution

The fourth proportional to 56,198.75, 84,301.36 and 21,138.71 is: 31,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,198.75 : 84,301.36 = 21,138.71 : x
  2. Step 2: Convert to fraction form
    56,198.75/84,301.36 = 21,138.71/x
  3. Step 3: Cross multiply
    56,198.75x = 84,301.36 × 21,138.71
  4. Step 4: Simplify right side
    56,198.75x = 1,782,021,527.29
  5. Step 5: Solve for x
    x = 1,782,021,527.29/56,198.75
  6. Step 6: Final answer
    x = 31,709.28

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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.