Looking for an easy way to link various files (GPX, JPG, DOC

I’m new to Devonthink and spent much time searching the forum. I hope someone could assist me. I’m a Tour Operator and need to sort thousands of itineraries.

I have thousands of GPX (for GPS) files and I need to link each one of them to a couple of JPG images (a map and profile), a Word Doc (Itinerary), A powerpoint file, and a PDF file.

What I’d like is when I look at any of this linked files, to be able to see all the other types of files associated to them.

Is there a fast and easy way to do this?
If not what would be the best alternative?

Thank you very much.