Home / 78,015.97-117,036.10-25,413.22

Finding the Fourth Proportional to 78,015.97, 117,036.10 and 25,413.22

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Solution

The fourth proportional to 78,015.97, 117,036.10 and 25,413.22 is: 38,123.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,015.97 : 117,036.10 = 25,413.22 : x
  2. Step 2: Convert to fraction form
    78,015.97/117,036.10 = 25,413.22/x
  3. Step 3: Cross multiply
    78,015.97x = 117,036.10 × 25,413.22
  4. Step 4: Simplify right side
    78,015.97x = 2,974,263,572.06
  5. Step 5: Solve for x
    x = 2,974,263,572.06/78,015.97
  6. Step 6: Final answer
    x = 38,123.78

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1.5x scale

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.