Finding the Fourth Proportional to 126,511.40, 189,621.02 and 47,575.28
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Solution
The fourth proportional to 126,511.40, 189,621.02 and 47,575.28 is: 71,307.99
Step by Step Solution
- Step 1: Write the proportion equation
126,511.40 : 189,621.02 = 47,575.28 : x - Step 2: Convert to fraction form
126,511.40/189,621.02 = 47,575.28/x - Step 3: Cross multiply
126,511.40x = 189,621.02 × 47,575.28 - Step 4: Simplify right side
126,511.40x = 9,021,273,120.39 - Step 5: Solve for x
x = 9,021,273,120.39/126,511.40 - Step 6: Final answer
x = 71,307.99
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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.