Finding the Fourth Proportional to 86,544.24, 129,816.36 and 31,138.80
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Solution
The fourth proportional to 86,544.24, 129,816.36 and 31,138.80 is: 46,708.20
Step by Step Solution
- Step 1: Write the proportion equation
86,544.24 : 129,816.36 = 31,138.80 : x - Step 2: Convert to fraction form
86,544.24/129,816.36 = 31,138.80/x - Step 3: Cross multiply
86,544.24x = 129,816.36 × 31,138.80 - Step 4: Simplify right side
86,544.24x = 4,042,325,670.77 - Step 5: Solve for x
x = 4,042,325,670.77/86,544.24 - Step 6: Final answer
x = 46,708.20
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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.