Finding the Fourth Proportional to 78,871.19, 108,842.48 and 50,576.99
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Solution
The fourth proportional to 78,871.19, 108,842.48 and 50,576.99 is: 69,796.40
Step by Step Solution
- Step 1: Write the proportion equation
78,871.19 : 108,842.48 = 50,576.99 : x - Step 2: Convert to fraction form
78,871.19/108,842.48 = 50,576.99/x - Step 3: Cross multiply
78,871.19x = 108,842.48 × 50,576.99 - Step 4: Simplify right side
78,871.19x = 5,504,924,604.77 - Step 5: Solve for x
x = 5,504,924,604.77/78,871.19 - Step 6: Final answer
x = 69,796.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.