Finding the Fourth Proportional to 86,615.39, 129,926.75 and 27,449.75
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Solution
The fourth proportional to 86,615.39, 129,926.75 and 27,449.75 is: 41,175.79
Step by Step Solution
- Step 1: Write the proportion equation
86,615.39 : 129,926.75 = 27,449.75 : x - Step 2: Convert to fraction form
86,615.39/129,926.75 = 27,449.75/x - Step 3: Cross multiply
86,615.39x = 129,926.75 × 27,449.75 - Step 4: Simplify right side
86,615.39x = 3,566,456,993.38 - Step 5: Solve for x
x = 3,566,456,993.38/86,615.39 - Step 6: Final answer
x = 41,175.79
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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.