Finding the Fourth Proportional to 91,078.97, 136,629.86 and 48,901.05
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Solution
The fourth proportional to 91,078.97, 136,629.86 and 48,901.05 is: 73,357.70
Step by Step Solution
- Step 1: Write the proportion equation
91,078.97 : 136,629.86 = 48,901.05 : x - Step 2: Convert to fraction form
91,078.97/136,629.86 = 48,901.05/x - Step 3: Cross multiply
91,078.97x = 136,629.86 × 48,901.05 - Step 4: Simplify right side
91,078.97x = 6,681,343,370.85 - Step 5: Solve for x
x = 6,681,343,370.85/91,078.97 - Step 6: Final answer
x = 73,357.70
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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.