Finding the Fourth Proportional to 86,412.30, 129,618.47 and 27,252.60
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Solution
The fourth proportional to 86,412.30, 129,618.47 and 27,252.60 is: 40,878.90
Step by Step Solution
- Step 1: Write the proportion equation
86,412.30 : 129,618.47 = 27,252.60 : x - Step 2: Convert to fraction form
86,412.30/129,618.47 = 27,252.60/x - Step 3: Cross multiply
86,412.30x = 129,618.47 × 27,252.60 - Step 4: Simplify right side
86,412.30x = 3,532,440,179.26 - Step 5: Solve for x
x = 3,532,440,179.26/86,412.30 - Step 6: Final answer
x = 40,878.90
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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.