Home / 68,986.13-103,385.61-31,499.73

Finding the Fourth Proportional to 68,986.13, 103,385.61 and 31,499.73

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Solution

The fourth proportional to 68,986.13, 103,385.61 and 31,499.73 is: 47,206.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,986.13 : 103,385.61 = 31,499.73 : x
  2. Step 2: Convert to fraction form
    68,986.13/103,385.61 = 31,499.73/x
  3. Step 3: Cross multiply
    68,986.13x = 103,385.61 × 31,499.73
  4. Step 4: Simplify right side
    68,986.13x = 3,256,618,800.89
  5. Step 5: Solve for x
    x = 3,256,618,800.89/68,986.13
  6. Step 6: Final answer
    x = 47,206.87

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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.