Finding the Fourth Proportional to 77,985,629.26, 107,623,531.62 and 43,178,320.18
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Solution
The fourth proportional to 77,985,629.26, 107,623,531.62 and 43,178,320.18 is: 59,587,943.97
Step by Step Solution
- Step 1: Write the proportion equation
77,985,629.26 : 107,623,531.62 = 43,178,320.18 : x - Step 2: Convert to fraction form
77,985,629.26/107,623,531.62 = 43,178,320.18/x - Step 3: Cross multiply
77,985,629.26x = 107,623,531.62 × 43,178,320.18 - Step 4: Simplify right side
77,985,629.26x = 4,647,003,307,190,714 - Step 5: Solve for x
x = 4,647,003,307,190,714/77,985,629.26 - Step 6: Final answer
x = 59,587,943.97
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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.