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Finding the Fourth Proportional to 71,413.60, 98,556.60 and 39,591.96

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Solution

The fourth proportional to 71,413.60, 98,556.60 and 39,591.96 is: 54,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,413.60 : 98,556.60 = 39,591.96 : x
  2. Step 2: Convert to fraction form
    71,413.60/98,556.60 = 39,591.96/x
  3. Step 3: Cross multiply
    71,413.60x = 98,556.60 × 39,591.96
  4. Step 4: Simplify right side
    71,413.60x = 3,902,048,964.94
  5. Step 5: Solve for x
    x = 3,902,048,964.94/71,413.60
  6. Step 6: Final answer
    x = 54,640.14

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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.