Finding the Fourth Proportional to 86,121.78, 129,112.97 and 26,926.98
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Solution
The fourth proportional to 86,121.78, 129,112.97 and 26,926.98 is: 40,368.68
Step by Step Solution
- Step 1: Write the proportion equation
86,121.78 : 129,112.97 = 26,926.98 : x - Step 2: Convert to fraction form
86,121.78/129,112.97 = 26,926.98/x - Step 3: Cross multiply
86,121.78x = 129,112.97 × 26,926.98 - Step 4: Simplify right side
86,121.78x = 3,476,622,226.30 - Step 5: Solve for x
x = 3,476,622,226.30/86,121.78 - Step 6: Final answer
x = 40,368.68
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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.