Finding the Fourth Proportional to 80,683.49, 120,941.86 and 30,750.18
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Solution
The fourth proportional to 80,683.49, 120,941.86 and 30,750.18 is: 46,093.50
Step by Step Solution
- Step 1: Write the proportion equation
80,683.49 : 120,941.86 = 30,750.18 : x - Step 2: Convert to fraction form
80,683.49/120,941.86 = 30,750.18/x - Step 3: Cross multiply
80,683.49x = 120,941.86 × 30,750.18 - Step 4: Simplify right side
80,683.49x = 3,718,984,172.08 - Step 5: Solve for x
x = 3,718,984,172.08/80,683.49 - Step 6: Final answer
x = 46,093.50
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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.