Finding the Fourth Proportional to 91,249.36, 136,877.92 and 28,918.48
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Solution
The fourth proportional to 91,249.36, 136,877.92 and 28,918.48 is: 43,378.95
Step by Step Solution
- Step 1: Write the proportion equation
91,249.36 : 136,877.92 = 28,918.48 : x - Step 2: Convert to fraction form
91,249.36/136,877.92 = 28,918.48/x - Step 3: Cross multiply
91,249.36x = 136,877.92 × 28,918.48 - Step 4: Simplify right side
91,249.36x = 3,958,301,391.96 - Step 5: Solve for x
x = 3,958,301,391.96/91,249.36 - Step 6: Final answer
x = 43,378.95
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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.