Finding the Fourth Proportional to 86,553.09, 129,845.43 and 39,804.75
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Solution
The fourth proportional to 86,553.09, 129,845.43 and 39,804.75 is: 59,714.39
Step by Step Solution
- Step 1: Write the proportion equation
86,553.09 : 129,845.43 = 39,804.75 : x - Step 2: Convert to fraction form
86,553.09/129,845.43 = 39,804.75/x - Step 3: Cross multiply
86,553.09x = 129,845.43 × 39,804.75 - Step 4: Simplify right side
86,553.09x = 5,168,464,879.79 - Step 5: Solve for x
x = 5,168,464,879.79/86,553.09 - Step 6: Final answer
x = 59,714.39
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1.5x scale
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.