Finding the Fourth Proportional to 84,551.86, 126,836.18 and 31,257.80
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Solution
The fourth proportional to 84,551.86, 126,836.18 and 31,257.80 is: 46,889.80
Step by Step Solution
- Step 1: Write the proportion equation
84,551.86 : 126,836.18 = 31,257.80 : x - Step 2: Convert to fraction form
84,551.86/126,836.18 = 31,257.80/x - Step 3: Cross multiply
84,551.86x = 126,836.18 × 31,257.80 - Step 4: Simplify right side
84,551.86x = 3,964,619,947.20 - Step 5: Solve for x
x = 3,964,619,947.20/84,551.86 - Step 6: Final answer
x = 46,889.80
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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.