Finding the Fourth Proportional to 81,759.60, 122,618.34 and 29,161.44
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Solution
The fourth proportional to 81,759.60, 122,618.34 and 29,161.44 is: 43,734.65
Step by Step Solution
- Step 1: Write the proportion equation
81,759.60 : 122,618.34 = 29,161.44 : x - Step 2: Convert to fraction form
81,759.60/122,618.34 = 29,161.44/x - Step 3: Cross multiply
81,759.60x = 122,618.34 × 29,161.44 - Step 4: Simplify right side
81,759.60x = 3,575,727,364.81 - Step 5: Solve for x
x = 3,575,727,364.81/81,759.60 - Step 6: Final answer
x = 43,734.65
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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.