Finding the Fourth Proportional to 81,910.68, 122,918.28 and 53,887.08
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Solution
The fourth proportional to 81,910.68, 122,918.28 and 53,887.08 is: 80,865.00
Step by Step Solution
- Step 1: Write the proportion equation
81,910.68 : 122,918.28 = 53,887.08 : x - Step 2: Convert to fraction form
81,910.68/122,918.28 = 53,887.08/x - Step 3: Cross multiply
81,910.68x = 122,918.28 × 53,887.08 - Step 4: Simplify right side
81,910.68x = 6,623,707,187.82 - Step 5: Solve for x
x = 6,623,707,187.82/81,910.68 - Step 6: Final answer
x = 80,865.00
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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.