Finding the Fourth Proportional to 139,922.55, 209,821.91 and 40,059.99
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Solution
The fourth proportional to 139,922.55, 209,821.91 and 40,059.99 is: 60,072.26
Step by Step Solution
- Step 1: Write the proportion equation
139,922.55 : 209,821.91 = 40,059.99 : x - Step 2: Convert to fraction form
139,922.55/209,821.91 = 40,059.99/x - Step 3: Cross multiply
139,922.55x = 209,821.91 × 40,059.99 - Step 4: Simplify right side
139,922.55x = 8,405,463,416.08 - Step 5: Solve for x
x = 8,405,463,416.08/139,922.55 - Step 6: Final answer
x = 60,072.26
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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.