Home / 78,004.47-117,006.62-25,413.87

Finding the Fourth Proportional to 78,004.47, 117,006.62 and 25,413.87

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Solution

The fourth proportional to 78,004.47, 117,006.62 and 25,413.87 is: 38,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.47 : 117,006.62 = 25,413.87 : x
  2. Step 2: Convert to fraction form
    78,004.47/117,006.62 = 25,413.87/x
  3. Step 3: Cross multiply
    78,004.47x = 117,006.62 × 25,413.87
  4. Step 4: Simplify right side
    78,004.47x = 2,973,590,902.75
  5. Step 5: Solve for x
    x = 2,973,590,902.75/78,004.47
  6. Step 6: Final answer
    x = 38,120.78

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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.