Finding the Fourth Proportional to 86,568.71, 129,911.39 and 33,971.99
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Solution
The fourth proportional to 86,568.71, 129,911.39 and 33,971.99 is: 50,980.87
Step by Step Solution
- Step 1: Write the proportion equation
86,568.71 : 129,911.39 = 33,971.99 : x - Step 2: Convert to fraction form
86,568.71/129,911.39 = 33,971.99/x - Step 3: Cross multiply
86,568.71x = 129,911.39 × 33,971.99 - Step 4: Simplify right side
86,568.71x = 4,413,348,272.11 - Step 5: Solve for x
x = 4,413,348,272.11/86,568.71 - Step 6: Final answer
x = 50,980.87
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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.