Home / 68,829.91-103,244.87-18,915.28

Finding the Fourth Proportional to 68,829.91, 103,244.87 and 18,915.28

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Solution

The fourth proportional to 68,829.91, 103,244.87 and 18,915.28 is: 28,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,829.91 : 103,244.87 = 18,915.28 : x
  2. Step 2: Convert to fraction form
    68,829.91/103,244.87 = 18,915.28/x
  3. Step 3: Cross multiply
    68,829.91x = 103,244.87 × 18,915.28
  4. Step 4: Simplify right side
    68,829.91x = 1,952,905,413.79
  5. Step 5: Solve for x
    x = 1,952,905,413.79/68,829.91
  6. Step 6: Final answer
    x = 28,372.92

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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.