Finding the Fourth Proportional to 79,043.14, 109,071.21 and 47,207.62
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Solution
The fourth proportional to 79,043.14, 109,071.21 and 47,207.62 is: 65,141.54
Step by Step Solution
- Step 1: Write the proportion equation
79,043.14 : 109,071.21 = 47,207.62 : x - Step 2: Convert to fraction form
79,043.14/109,071.21 = 47,207.62/x - Step 3: Cross multiply
79,043.14x = 109,071.21 × 47,207.62 - Step 4: Simplify right side
79,043.14x = 5,148,992,234.62 - Step 5: Solve for x
x = 5,148,992,234.62/79,043.14 - Step 6: Final answer
x = 65,141.54
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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.