Finding the Fourth Proportional to 31,679,984.09, 43,718,716.37 and 19,456,841.09
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Solution
The fourth proportional to 31,679,984.09, 43,718,716.37 and 19,456,841.09 is: 26,850,648.49
Step by Step Solution
- Step 1: Write the proportion equation
31,679,984.09 : 43,718,716.37 = 19,456,841.09 : x - Step 2: Convert to fraction form
31,679,984.09/43,718,716.37 = 19,456,841.09/x - Step 3: Cross multiply
31,679,984.09x = 43,718,716.37 × 19,456,841.09 - Step 4: Simplify right side
31,679,984.09x = 850,628,117,069,871.62 - Step 5: Solve for x
x = 850,628,117,069,871.62/31,679,984.09 - Step 6: Final answer
x = 26,850,648.49
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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.