Finding the Fourth Proportional to 31,679,982.09, 43,718,713.61 and 19,456,839.09
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Solution
The fourth proportional to 31,679,982.09, 43,718,713.61 and 19,456,839.09 is: 26,850,645.73
Step by Step Solution
- Step 1: Write the proportion equation
31,679,982.09 : 43,718,713.61 = 19,456,839.09 : x - Step 2: Convert to fraction form
31,679,982.09/43,718,713.61 = 19,456,839.09/x - Step 3: Cross multiply
31,679,982.09x = 43,718,713.61 × 19,456,839.09 - Step 4: Simplify right side
31,679,982.09x = 850,627,975,834,278.75 - Step 5: Solve for x
x = 850,627,975,834,278.75/31,679,982.09 - Step 6: Final answer
x = 26,850,645.73
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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.