Finding the Fourth Proportional to 86,159.97, 129,107.93 and 57,975.75
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Solution
The fourth proportional to 86,159.97, 129,107.93 and 57,975.75 is: 86,874.78
Step by Step Solution
- Step 1: Write the proportion equation
86,159.97 : 129,107.93 = 57,975.75 : x - Step 2: Convert to fraction form
86,159.97/129,107.93 = 57,975.75/x - Step 3: Cross multiply
86,159.97x = 129,107.93 × 57,975.75 - Step 4: Simplify right side
86,159.97x = 7,485,128,782.82 - Step 5: Solve for x
x = 7,485,128,782.82/86,159.97 - Step 6: Final answer
x = 86,874.78
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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.