Home / 74,229.07-111,321.82-20,917.51

Finding the Fourth Proportional to 74,229.07, 111,321.82 and 20,917.51

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Solution

The fourth proportional to 74,229.07, 111,321.82 and 20,917.51 is: 31,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,229.07 : 111,321.82 = 20,917.51 : x
  2. Step 2: Convert to fraction form
    74,229.07/111,321.82 = 20,917.51/x
  3. Step 3: Cross multiply
    74,229.07x = 111,321.82 × 20,917.51
  4. Step 4: Simplify right side
    74,229.07x = 2,328,575,283.07
  5. Step 5: Solve for x
    x = 2,328,575,283.07/74,229.07
  6. Step 6: Final answer
    x = 31,370.13

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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.