Finding the Fourth Proportional to 78,067,835,198.45, 107,693,963,338.64 and 50,986,961,413.99
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Solution
The fourth proportional to 78,067,835,198.45, 107,693,963,338.64 and 50,986,961,413.99 is: 70,336,111,399.90
Step by Step Solution
- Step 1: Write the proportion equation
78,067,835,198.45 : 107,693,963,338.64 = 50,986,961,413.99 : x - Step 2: Convert to fraction form
78,067,835,198.45/107,693,963,338.64 = 50,986,961,413.99/x - Step 3: Cross multiply
78,067,835,198.45x = 107,693,963,338.64 × 50,986,961,413.99 - Step 4: Simplify right side
78,067,835,198.45x = 5,490,987,953,266,890,899,456 - Step 5: Solve for x
x = 5,490,987,953,266,890,899,456/78,067,835,198.45 - Step 6: Final answer
x = 70,336,111,399.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.