Home / 74,520.31-111,780.50-18,361.51

Finding the Fourth Proportional to 74,520.31, 111,780.50 and 18,361.51

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Solution

The fourth proportional to 74,520.31, 111,780.50 and 18,361.51 is: 27,542.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.31 : 111,780.50 = 18,361.51 : x
  2. Step 2: Convert to fraction form
    74,520.31/111,780.50 = 18,361.51/x
  3. Step 3: Cross multiply
    74,520.31x = 111,780.50 × 18,361.51
  4. Step 4: Simplify right side
    74,520.31x = 2,052,458,768.56
  5. Step 5: Solve for x
    x = 2,052,458,768.56/74,520.31
  6. Step 6: Final answer
    x = 27,542.27

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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.