Home / 39,751.77-54,856.32-21,846.78

Finding the Fourth Proportional to 39,751.77, 54,856.32 and 21,846.78

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Solution

The fourth proportional to 39,751.77, 54,856.32 and 21,846.78 is: 30,147.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,751.77 : 54,856.32 = 21,846.78 : x
  2. Step 2: Convert to fraction form
    39,751.77/54,856.32 = 21,846.78/x
  3. Step 3: Cross multiply
    39,751.77x = 54,856.32 × 21,846.78
  4. Step 4: Simplify right side
    39,751.77x = 1,198,433,954.65
  5. Step 5: Solve for x
    x = 1,198,433,954.65/39,751.77
  6. Step 6: Final answer
    x = 30,147.94

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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.