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Finding the Fourth Proportional to 68,626, 94,708.20 and 38,413.36

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Solution

The fourth proportional to 68,626, 94,708.20 and 38,413.36 is: 53,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,626 : 94,708.20 = 38,413.36 : x
  2. Step 2: Convert to fraction form
    68,626/94,708.20 = 38,413.36/x
  3. Step 3: Cross multiply
    68,626x = 94,708.20 × 38,413.36
  4. Step 4: Simplify right side
    68,626x = 3,638,060,181.55
  5. Step 5: Solve for x
    x = 3,638,060,181.55/68,626
  6. Step 6: Final answer
    x = 53,012.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.