Finding the Fourth Proportional to 126,455.62, 189,679.05 and 31,686.63
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Solution
The fourth proportional to 126,455.62, 189,679.05 and 31,686.63 is: 47,528.85
Step by Step Solution
- Step 1: Write the proportion equation
126,455.62 : 189,679.05 = 31,686.63 : x - Step 2: Convert to fraction form
126,455.62/189,679.05 = 31,686.63/x - Step 3: Cross multiply
126,455.62x = 189,679.05 × 31,686.63 - Step 4: Simplify right side
126,455.62x = 6,010,289,876.10 - Step 5: Solve for x
x = 6,010,289,876.10/126,455.62 - Step 6: Final answer
x = 47,528.85
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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.