Finding the Fourth Proportional to 79,077.05, 109,115.57 and 47,239.19
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Solution
The fourth proportional to 79,077.05, 109,115.57 and 47,239.19 is: 65,183.65
Step by Step Solution
- Step 1: Write the proportion equation
79,077.05 : 109,115.57 = 47,239.19 : x - Step 2: Convert to fraction form
79,077.05/109,115.57 = 47,239.19/x - Step 3: Cross multiply
79,077.05x = 109,115.57 × 47,239.19 - Step 4: Simplify right side
79,077.05x = 5,154,531,143.19 - Step 5: Solve for x
x = 5,154,531,143.19/79,077.05 - Step 6: Final answer
x = 65,183.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.