Home / 74,481.78-111,709.44-21,177.30

Finding the Fourth Proportional to 74,481.78, 111,709.44 and 21,177.30

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Solution

The fourth proportional to 74,481.78, 111,709.44 and 21,177.30 is: 31,762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,481.78 : 111,709.44 = 21,177.30 : x
  2. Step 2: Convert to fraction form
    74,481.78/111,709.44 = 21,177.30/x
  3. Step 3: Cross multiply
    74,481.78x = 111,709.44 × 21,177.30
  4. Step 4: Simplify right side
    74,481.78x = 2,365,704,323.71
  5. Step 5: Solve for x
    x = 2,365,704,323.71/74,481.78
  6. Step 6: Final answer
    x = 31,762.19

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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.