Home / 68,860.48-103,291.18-18,945.85

Finding the Fourth Proportional to 68,860.48, 103,291.18 and 18,945.85

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Solution

The fourth proportional to 68,860.48, 103,291.18 and 18,945.85 is: 28,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,860.48 : 103,291.18 = 18,945.85 : x
  2. Step 2: Convert to fraction form
    68,860.48/103,291.18 = 18,945.85/x
  3. Step 3: Cross multiply
    68,860.48x = 103,291.18 × 18,945.85
  4. Step 4: Simplify right side
    68,860.48x = 1,956,939,107.87
  5. Step 5: Solve for x
    x = 1,956,939,107.87/68,860.48
  6. Step 6: Final answer
    x = 28,418.90

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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.