Finding the Fourth Proportional to 86,538.05, 129,811.80 and 27,369.31
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Solution
The fourth proportional to 86,538.05, 129,811.80 and 27,369.31 is: 41,055.46
Step by Step Solution
- Step 1: Write the proportion equation
86,538.05 : 129,811.80 = 27,369.31 : x - Step 2: Convert to fraction form
86,538.05/129,811.80 = 27,369.31/x - Step 3: Cross multiply
86,538.05x = 129,811.80 × 27,369.31 - Step 4: Simplify right side
86,538.05x = 3,552,859,173.96 - Step 5: Solve for x
x = 3,552,859,173.96/86,538.05 - Step 6: Final answer
x = 41,055.46
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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.