Finding the Fourth Proportional to 68,529.68, 102,781.94 and 31,080.75
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Solution
The fourth proportional to 68,529.68, 102,781.94 and 31,080.75 is: 46,615.42
Step by Step Solution
- Step 1: Write the proportion equation
68,529.68 : 102,781.94 = 31,080.75 : x - Step 2: Convert to fraction form
68,529.68/102,781.94 = 31,080.75/x - Step 3: Cross multiply
68,529.68x = 102,781.94 × 31,080.75 - Step 4: Simplify right side
68,529.68x = 3,194,539,626.25 - Step 5: Solve for x
x = 3,194,539,626.25/68,529.68 - Step 6: Final answer
x = 46,615.42
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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.