Home / 83,784.72-125,675.96-20,605.38

Finding the Fourth Proportional to 83,784.72, 125,675.96 and 20,605.38

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Solution

The fourth proportional to 83,784.72, 125,675.96 and 20,605.38 is: 30,907.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,784.72 : 125,675.96 = 20,605.38 : x
  2. Step 2: Convert to fraction form
    83,784.72/125,675.96 = 20,605.38/x
  3. Step 3: Cross multiply
    83,784.72x = 125,675.96 × 20,605.38
  4. Step 4: Simplify right side
    83,784.72x = 2,589,600,912.66
  5. Step 5: Solve for x
    x = 2,589,600,912.66/83,784.72
  6. Step 6: Final answer
    x = 30,907.79

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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.