Finding the Fourth Proportional to 89,243.08, 133,135.55 and 82,879.72
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Solution
The fourth proportional to 89,243.08, 133,135.55 and 82,879.72 is: 123,642.50
Step by Step Solution
- Step 1: Write the proportion equation
89,243.08 : 133,135.55 = 82,879.72 : x - Step 2: Convert to fraction form
89,243.08/133,135.55 = 82,879.72/x - Step 3: Cross multiply
89,243.08x = 133,135.55 × 82,879.72 - Step 4: Simplify right side
89,243.08x = 11,034,237,106.05 - Step 5: Solve for x
x = 11,034,237,106.05/89,243.08 - Step 6: Final answer
x = 123,642.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.