Finding the Fourth Proportional to 84,153.88, 126,213.54 and 31,562.20
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Solution
The fourth proportional to 84,153.88, 126,213.54 and 31,562.20 is: 47,336.82
Step by Step Solution
- Step 1: Write the proportion equation
84,153.88 : 126,213.54 = 31,562.20 : x - Step 2: Convert to fraction form
84,153.88/126,213.54 = 31,562.20/x - Step 3: Cross multiply
84,153.88x = 126,213.54 × 31,562.20 - Step 4: Simplify right side
84,153.88x = 3,983,576,992.19 - Step 5: Solve for x
x = 3,983,576,992.19/84,153.88 - Step 6: Final answer
x = 47,336.82
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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.