Home / 74,074.65-111,174.20-69,403.79

Finding the Fourth Proportional to 74,074.65, 111,174.20 and 69,403.79

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Solution

The fourth proportional to 74,074.65, 111,174.20 and 69,403.79 is: 104,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,074.65 : 111,174.20 = 69,403.79 : x
  2. Step 2: Convert to fraction form
    74,074.65/111,174.20 = 69,403.79/x
  3. Step 3: Cross multiply
    74,074.65x = 111,174.20 × 69,403.79
  4. Step 4: Simplify right side
    74,074.65x = 7,715,909,927.33
  5. Step 5: Solve for x
    x = 7,715,909,927.33/74,074.65
  6. Step 6: Final answer
    x = 104,163.97

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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.