Finding the Fourth Proportional to 75,409.58, 113,075.67 and 39,890.07
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Solution
The fourth proportional to 75,409.58, 113,075.67 and 39,890.07 is: 59,814.63
Step by Step Solution
- Step 1: Write the proportion equation
75,409.58 : 113,075.67 = 39,890.07 : x - Step 2: Convert to fraction form
75,409.58/113,075.67 = 39,890.07/x - Step 3: Cross multiply
75,409.58x = 113,075.67 × 39,890.07 - Step 4: Simplify right side
75,409.58x = 4,510,595,826.22 - Step 5: Solve for x
x = 4,510,595,826.22/75,409.58 - Step 6: Final answer
x = 59,814.63
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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.