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Finding the Third Proportional to 28,413.75 and 61,815

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Solution

The third proportional to 28,413.75 and 61,815 is: 134,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.75 : 61,815 = 61,815 : x
  2. Step 2: Convert to fraction form
    28,413.75/61,815 = 61,815/x
  3. Step 3: Cross multiply
    28,413.75x = 61,815 × 61,815
  4. Step 4: Simplify right side
    28,413.75x = 3,821,094,225
  5. Step 5: Solve for x
    x = 3,821,094,225/28,413.75
  6. Step 6: Final answer
    x = 134,480.46

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.