Finding the Fourth Proportional to 86,616.50, 129,928.53 and 27,456.53
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Solution
The fourth proportional to 86,616.50, 129,928.53 and 27,456.53 is: 41,185.99
Step by Step Solution
- Step 1: Write the proportion equation
86,616.50 : 129,928.53 = 27,456.53 : x - Step 2: Convert to fraction form
86,616.50/129,928.53 = 27,456.53/x - Step 3: Cross multiply
86,616.50x = 129,928.53 × 27,456.53 - Step 4: Simplify right side
86,616.50x = 3,567,386,581.80 - Step 5: Solve for x
x = 3,567,386,581.80/86,616.50 - Step 6: Final answer
x = 41,185.99
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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.