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Finding the Fourth Proportional to 63,760.40, 95,640.60 and 40,413.20

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Solution

The fourth proportional to 63,760.40, 95,640.60 and 40,413.20 is: 60,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,760.40 : 95,640.60 = 40,413.20 : x
  2. Step 2: Convert to fraction form
    63,760.40/95,640.60 = 40,413.20/x
  3. Step 3: Cross multiply
    63,760.40x = 95,640.60 × 40,413.20
  4. Step 4: Simplify right side
    63,760.40x = 3,865,142,695.92
  5. Step 5: Solve for x
    x = 3,865,142,695.92/63,760.40
  6. Step 6: Final answer
    x = 60,619.80

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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.