Finding the Fourth Proportional to 81,893.36, 122,838.64 and 36,889.68
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Solution
The fourth proportional to 81,893.36, 122,838.64 and 36,889.68 is: 55,333.89
Step by Step Solution
- Step 1: Write the proportion equation
81,893.36 : 122,838.64 = 36,889.68 : x - Step 2: Convert to fraction form
81,893.36/122,838.64 = 36,889.68/x - Step 3: Cross multiply
81,893.36x = 122,838.64 × 36,889.68 - Step 4: Simplify right side
81,893.36x = 4,531,478,121.24 - Step 5: Solve for x
x = 4,531,478,121.24/81,893.36 - Step 6: Final answer
x = 55,333.89
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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.