Finding the Fourth Proportional to 86,542.36, 129,924.26 and 73,477.74
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Solution
The fourth proportional to 86,542.36, 129,924.26 and 73,477.74 is: 110,310.62
Step by Step Solution
- Step 1: Write the proportion equation
86,542.36 : 129,924.26 = 73,477.74 : x - Step 2: Convert to fraction form
86,542.36/129,924.26 = 73,477.74/x - Step 3: Cross multiply
86,542.36x = 129,924.26 × 73,477.74 - Step 4: Simplify right side
86,542.36x = 9,546,540,995.97 - Step 5: Solve for x
x = 9,546,540,995.97/86,542.36 - Step 6: Final answer
x = 110,310.62
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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.