Finding the Fourth Proportional to 80,701.80, 121,052.70 and 31,453.80
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Solution
The fourth proportional to 80,701.80, 121,052.70 and 31,453.80 is: 47,180.70
Step by Step Solution
- Step 1: Write the proportion equation
80,701.80 : 121,052.70 = 31,453.80 : x - Step 2: Convert to fraction form
80,701.80/121,052.70 = 31,453.80/x - Step 3: Cross multiply
80,701.80x = 121,052.70 × 31,453.80 - Step 4: Simplify right side
80,701.80x = 3,807,567,415.26 - Step 5: Solve for x
x = 3,807,567,415.26/80,701.80 - Step 6: Final answer
x = 47,180.70
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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.