Home / 68,732.96-103,099.38-18,813.50

Finding the Fourth Proportional to 68,732.96, 103,099.38 and 18,813.50

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Solution

The fourth proportional to 68,732.96, 103,099.38 and 18,813.50 is: 28,220.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,732.96 : 103,099.38 = 18,813.50 : x
  2. Step 2: Convert to fraction form
    68,732.96/103,099.38 = 18,813.50/x
  3. Step 3: Cross multiply
    68,732.96x = 103,099.38 × 18,813.50
  4. Step 4: Simplify right side
    68,732.96x = 1,939,660,185.63
  5. Step 5: Solve for x
    x = 1,939,660,185.63/68,732.96
  6. Step 6: Final answer
    x = 28,220.23

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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.