Finding the Fourth Proportional to 75,583.30, 104,448.81 and 56,687.62
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Solution
The fourth proportional to 75,583.30, 104,448.81 and 56,687.62 is: 78,336.81
Step by Step Solution
- Step 1: Write the proportion equation
75,583.30 : 104,448.81 = 56,687.62 : x - Step 2: Convert to fraction form
75,583.30/104,448.81 = 56,687.62/x - Step 3: Cross multiply
75,583.30x = 104,448.81 × 56,687.62 - Step 4: Simplify right side
75,583.30x = 5,920,954,450.73 - Step 5: Solve for x
x = 5,920,954,450.73/75,583.30 - Step 6: Final answer
x = 78,336.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.