Finding the Fourth Proportional to 86,445.75, 129,719.67 and 36,522.63
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Solution
The fourth proportional to 86,445.75, 129,719.67 and 36,522.63 is: 54,805.51
Step by Step Solution
- Step 1: Write the proportion equation
86,445.75 : 129,719.67 = 36,522.63 : x - Step 2: Convert to fraction form
86,445.75/129,719.67 = 36,522.63/x - Step 3: Cross multiply
86,445.75x = 129,719.67 × 36,522.63 - Step 4: Simplify right side
86,445.75x = 4,737,703,511.13 - Step 5: Solve for x
x = 4,737,703,511.13/86,445.75 - Step 6: Final answer
x = 54,805.51
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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.