Home / 69,029.20-103,558.20-39,422.80

Finding the Fourth Proportional to 69,029.20, 103,558.20 and 39,422.80

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Solution

The fourth proportional to 69,029.20, 103,558.20 and 39,422.80 is: 59,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,029.20 : 103,558.20 = 39,422.80 : x
  2. Step 2: Convert to fraction form
    69,029.20/103,558.20 = 39,422.80/x
  3. Step 3: Cross multiply
    69,029.20x = 103,558.20 × 39,422.80
  4. Step 4: Simplify right side
    69,029.20x = 4,082,554,206.96
  5. Step 5: Solve for x
    x = 4,082,554,206.96/69,029.20
  6. Step 6: Final answer
    x = 59,142.42

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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.