Finding the Fourth Proportional to 85,388.24, 128,082.36 and 29,229.08
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Solution
The fourth proportional to 85,388.24, 128,082.36 and 29,229.08 is: 43,843.62
Step by Step Solution
- Step 1: Write the proportion equation
85,388.24 : 128,082.36 = 29,229.08 : x - Step 2: Convert to fraction form
85,388.24/128,082.36 = 29,229.08/x - Step 3: Cross multiply
85,388.24x = 128,082.36 × 29,229.08 - Step 4: Simplify right side
85,388.24x = 3,743,729,547.03 - Step 5: Solve for x
x = 3,743,729,547.03/85,388.24 - Step 6: Final answer
x = 43,843.62
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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.