Finding the Fourth Proportional to 79,853.72, 119,771.26 and 20,684.84
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Solution
The fourth proportional to 79,853.72, 119,771.26 and 20,684.84 is: 31,024.84
Step by Step Solution
- Step 1: Write the proportion equation
79,853.72 : 119,771.26 = 20,684.84 : x - Step 2: Convert to fraction form
79,853.72/119,771.26 = 20,684.84/x - Step 3: Cross multiply
79,853.72x = 119,771.26 × 20,684.84 - Step 4: Simplify right side
79,853.72x = 2,477,448,699.13 - Step 5: Solve for x
x = 2,477,448,699.13/79,853.72 - Step 6: Final answer
x = 31,024.84
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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.