Home / 39,609.78-59,443.71-31,911.54

Finding the Fourth Proportional to 39,609.78, 59,443.71 and 31,911.54

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Solution

The fourth proportional to 39,609.78, 59,443.71 and 31,911.54 is: 47,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.78 : 59,443.71 = 31,911.54 : x
  2. Step 2: Convert to fraction form
    39,609.78/59,443.71 = 31,911.54/x
  3. Step 3: Cross multiply
    39,609.78x = 59,443.71 × 31,911.54
  4. Step 4: Simplify right side
    39,609.78x = 1,896,940,329.41
  5. Step 5: Solve for x
    x = 1,896,940,329.41/39,609.78
  6. Step 6: Final answer
    x = 47,890.71

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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.