Home / 74,520.31-111,780.46-21,929.81

Finding the Fourth Proportional to 74,520.31, 111,780.46 and 21,929.81

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Solution

The fourth proportional to 74,520.31, 111,780.46 and 21,929.81 is: 32,894.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.31 : 111,780.46 = 21,929.81 : x
  2. Step 2: Convert to fraction form
    74,520.31/111,780.46 = 21,929.81/x
  3. Step 3: Cross multiply
    74,520.31x = 111,780.46 × 21,929.81
  4. Step 4: Simplify right side
    74,520.31x = 2,451,324,249.51
  5. Step 5: Solve for x
    x = 2,451,324,249.51/74,520.31
  6. Step 6: Final answer
    x = 32,894.71

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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.