Finding the Fourth Proportional to 86,243.96, 129,365.97 and 38,803.64
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Solution
The fourth proportional to 86,243.96, 129,365.97 and 38,803.64 is: 58,205.47
Step by Step Solution
- Step 1: Write the proportion equation
86,243.96 : 129,365.97 = 38,803.64 : x - Step 2: Convert to fraction form
86,243.96/129,365.97 = 38,803.64/x - Step 3: Cross multiply
86,243.96x = 129,365.97 × 38,803.64 - Step 4: Simplify right side
86,243.96x = 5,019,870,528.13 - Step 5: Solve for x
x = 5,019,870,528.13/86,243.96 - Step 6: Final answer
x = 58,205.47
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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.