Home / 68,940.36-103,413.51-21,556.35

Finding the Fourth Proportional to 68,940.36, 103,413.51 and 21,556.35

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Solution

The fourth proportional to 68,940.36, 103,413.51 and 21,556.35 is: 32,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,940.36 : 103,413.51 = 21,556.35 : x
  2. Step 2: Convert to fraction form
    68,940.36/103,413.51 = 21,556.35/x
  3. Step 3: Cross multiply
    68,940.36x = 103,413.51 × 21,556.35
  4. Step 4: Simplify right side
    68,940.36x = 2,229,217,816.29
  5. Step 5: Solve for x
    x = 2,229,217,816.29/68,940.36
  6. Step 6: Final answer
    x = 32,335.45

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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.