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Finding the Fourth Proportional to 25,906,942.40, 38,860,413.60 and 18,342,449.60

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Solution

The fourth proportional to 25,906,942.40, 38,860,413.60 and 18,342,449.60 is: 27,513,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,906,942.40 : 38,860,413.60 = 18,342,449.60 : x
  2. Step 2: Convert to fraction form
    25,906,942.40/38,860,413.60 = 18,342,449.60/x
  3. Step 3: Cross multiply
    25,906,942.40x = 38,860,413.60 × 18,342,449.60
  4. Step 4: Simplify right side
    25,906,942.40x = 712,795,177,893,154.62
  5. Step 5: Solve for x
    x = 712,795,177,893,154.62/25,906,942.40
  6. Step 6: Final answer
    x = 27,513,674.40

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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.