Home / 74,028.96-111,050.51-20,720.97

Finding the Fourth Proportional to 74,028.96, 111,050.51 and 20,720.97

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Solution

The fourth proportional to 74,028.96, 111,050.51 and 20,720.97 is: 31,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,028.96 : 111,050.51 = 20,720.97 : x
  2. Step 2: Convert to fraction form
    74,028.96/111,050.51 = 20,720.97/x
  3. Step 3: Cross multiply
    74,028.96x = 111,050.51 × 20,720.97
  4. Step 4: Simplify right side
    74,028.96x = 2,301,074,182.59
  5. Step 5: Solve for x
    x = 2,301,074,182.59/74,028.96
  6. Step 6: Final answer
    x = 31,083.43

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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.