Home / 40,976.72-61,413.04-19,921.60

Finding the Fourth Proportional to 40,976.72, 61,413.04 and 19,921.60

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Solution

The fourth proportional to 40,976.72, 61,413.04 and 19,921.60 is: 29,857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,976.72 : 61,413.04 = 19,921.60 : x
  2. Step 2: Convert to fraction form
    40,976.72/61,413.04 = 19,921.60/x
  3. Step 3: Cross multiply
    40,976.72x = 61,413.04 × 19,921.60
  4. Step 4: Simplify right side
    40,976.72x = 1,223,446,017.66
  5. Step 5: Solve for x
    x = 1,223,446,017.66/40,976.72
  6. Step 6: Final answer
    x = 29,857.10

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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.