Finding the Fourth Proportional to 5,167,929.13, 7,131,672.59 and 2,876,089.21
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Solution
The fourth proportional to 5,167,929.13, 7,131,672.59 and 2,876,089.21 is: 3,968,964.37
Step by Step Solution
- Step 1: Write the proportion equation
5,167,929.13 : 7,131,672.59 = 2,876,089.21 : x - Step 2: Convert to fraction form
5,167,929.13/7,131,672.59 = 2,876,089.21/x - Step 3: Cross multiply
5,167,929.13x = 7,131,672.59 × 2,876,089.21 - Step 4: Simplify right side
5,167,929.13x = 20,511,326,570,971.31 - Step 5: Solve for x
x = 20,511,326,570,971.31/5,167,929.13 - Step 6: Final answer
x = 3,968,964.37
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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.