Finding the Fourth Proportional to 75,879.09, 113,830.99 and 28,497.87
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Solution
The fourth proportional to 75,879.09, 113,830.99 and 28,497.87 is: 42,751.44
Step by Step Solution
- Step 1: Write the proportion equation
75,879.09 : 113,830.99 = 28,497.87 : x - Step 2: Convert to fraction form
75,879.09/113,830.99 = 28,497.87/x - Step 3: Cross multiply
75,879.09x = 113,830.99 × 28,497.87 - Step 4: Simplify right side
75,879.09x = 3,243,940,683.75 - Step 5: Solve for x
x = 3,243,940,683.75/75,879.09 - Step 6: Final answer
x = 42,751.44
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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.