Finding the Fourth Proportional to 78,871.26, 108,854.84 and 50,160.99
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Solution
The fourth proportional to 78,871.26, 108,854.84 and 50,160.99 is: 69,230.12
Step by Step Solution
- Step 1: Write the proportion equation
78,871.26 : 108,854.84 = 50,160.99 : x - Step 2: Convert to fraction form
78,871.26/108,854.84 = 50,160.99/x - Step 3: Cross multiply
78,871.26x = 108,854.84 × 50,160.99 - Step 4: Simplify right side
78,871.26x = 5,460,266,540.69 - Step 5: Solve for x
x = 5,460,266,540.69/78,871.26 - Step 6: Final answer
x = 69,230.12
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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.