Finding the Fourth Proportional to 91,709.80, 137,564.70 and 36,305.80
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Solution
The fourth proportional to 91,709.80, 137,564.70 and 36,305.80 is: 54,458.70
Step by Step Solution
- Step 1: Write the proportion equation
91,709.80 : 137,564.70 = 36,305.80 : x - Step 2: Convert to fraction form
91,709.80/137,564.70 = 36,305.80/x - Step 3: Cross multiply
91,709.80x = 137,564.70 × 36,305.80 - Step 4: Simplify right side
91,709.80x = 4,994,396,485.26 - Step 5: Solve for x
x = 4,994,396,485.26/91,709.80 - Step 6: Final answer
x = 54,458.70
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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.