Home / 78,016.47-117,036.85-25,413.72

Finding the Fourth Proportional to 78,016.47, 117,036.85 and 25,413.72

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Solution

The fourth proportional to 78,016.47, 117,036.85 and 25,413.72 is: 38,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,016.47 : 117,036.85 = 25,413.72 : x
  2. Step 2: Convert to fraction form
    78,016.47/117,036.85 = 25,413.72/x
  3. Step 3: Cross multiply
    78,016.47x = 117,036.85 × 25,413.72
  4. Step 4: Simplify right side
    78,016.47x = 2,974,341,735.58
  5. Step 5: Solve for x
    x = 2,974,341,735.58/78,016.47
  6. Step 6: Final answer
    x = 38,124.54

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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.