Finding the Fourth Proportional to 78,231.42, 117,304.74 and 27,605.07
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Solution
The fourth proportional to 78,231.42, 117,304.74 and 27,605.07 is: 41,392.65
Step by Step Solution
- Step 1: Write the proportion equation
78,231.42 : 117,304.74 = 27,605.07 : x - Step 2: Convert to fraction form
78,231.42/117,304.74 = 27,605.07/x - Step 3: Cross multiply
78,231.42x = 117,304.74 × 27,605.07 - Step 4: Simplify right side
78,231.42x = 3,238,205,559.03 - Step 5: Solve for x
x = 3,238,205,559.03/78,231.42 - Step 6: Final answer
x = 41,392.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.