Finding the Fourth Proportional to 84,879.62, 117,142.77 and 47,153.87
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Solution
The fourth proportional to 84,879.62, 117,142.77 and 47,153.87 is: 65,077.28
Step by Step Solution
- Step 1: Write the proportion equation
84,879.62 : 117,142.77 = 47,153.87 : x - Step 2: Convert to fraction form
84,879.62/117,142.77 = 47,153.87/x - Step 3: Cross multiply
84,879.62x = 117,142.77 × 47,153.87 - Step 4: Simplify right side
84,879.62x = 5,523,734,362.31 - Step 5: Solve for x
x = 5,523,734,362.31/84,879.62 - Step 6: Final answer
x = 65,077.28
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1.5x scale
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.