Finding the Fourth Proportional to 81,486.96, 122,184.36 and 48,211.44
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Solution
The fourth proportional to 81,486.96, 122,184.36 and 48,211.44 is: 72,289.90
Step by Step Solution
- Step 1: Write the proportion equation
81,486.96 : 122,184.36 = 48,211.44 : x - Step 2: Convert to fraction form
81,486.96/122,184.36 = 48,211.44/x - Step 3: Cross multiply
81,486.96x = 122,184.36 × 48,211.44 - Step 4: Simplify right side
81,486.96x = 5,890,683,941.08 - Step 5: Solve for x
x = 5,890,683,941.08/81,486.96 - Step 6: Final answer
x = 72,289.90
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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.