Finding the Fourth Proportional to 77,907,760.41, 107,515,874.39 and 43,099,851.09
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Solution
The fourth proportional to 77,907,760.41, 107,515,874.39 and 43,099,851.09 is: 59,479,545.44
Step by Step Solution
- Step 1: Write the proportion equation
77,907,760.41 : 107,515,874.39 = 43,099,851.09 : x - Step 2: Convert to fraction form
77,907,760.41/107,515,874.39 = 43,099,851.09/x - Step 3: Cross multiply
77,907,760.41x = 107,515,874.39 × 43,099,851.09 - Step 4: Simplify right side
77,907,760.41x = 4,633,918,175,804,646 - Step 5: Solve for x
x = 4,633,918,175,804,646/77,907,760.41 - Step 6: Final answer
x = 59,479,545.44
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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.