Finding the Fourth Proportional to 86,647.56, 129,975.92 and 27,487.80
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Solution
The fourth proportional to 86,647.56, 129,975.92 and 27,487.80 is: 41,233.15
Step by Step Solution
- Step 1: Write the proportion equation
86,647.56 : 129,975.92 = 27,487.80 : x - Step 2: Convert to fraction form
86,647.56/129,975.92 = 27,487.80/x - Step 3: Cross multiply
86,647.56x = 129,975.92 × 27,487.80 - Step 4: Simplify right side
86,647.56x = 3,572,752,093.78 - Step 5: Solve for x
x = 3,572,752,093.78/86,647.56 - Step 6: Final answer
x = 41,233.15
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1.5x scale
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.