Finding the Fourth Proportional to 81,664.86, 122,514.60 and 29,074.19
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Solution
The fourth proportional to 81,664.86, 122,514.60 and 29,074.19 is: 43,617.45
Step by Step Solution
- Step 1: Write the proportion equation
81,664.86 : 122,514.60 = 29,074.19 : x - Step 2: Convert to fraction form
81,664.86/122,514.60 = 29,074.19/x - Step 3: Cross multiply
81,664.86x = 122,514.60 × 29,074.19 - Step 4: Simplify right side
81,664.86x = 3,562,012,379.20 - Step 5: Solve for x
x = 3,562,012,379.20/81,664.86 - Step 6: Final answer
x = 43,617.45
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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.