Finding the Fourth Proportional to 81,602.80, 122,329.08 and 31,716.08
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Solution
The fourth proportional to 81,602.80, 122,329.08 and 31,716.08 is: 47,544.92
Step by Step Solution
- Step 1: Write the proportion equation
81,602.80 : 122,329.08 = 31,716.08 : x - Step 2: Convert to fraction form
81,602.80/122,329.08 = 31,716.08/x - Step 3: Cross multiply
81,602.80x = 122,329.08 × 31,716.08 - Step 4: Simplify right side
81,602.80x = 3,879,798,887.61 - Step 5: Solve for x
x = 3,879,798,887.61/81,602.80 - Step 6: Final answer
x = 47,544.92
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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.