Finding the Fourth Proportional to 75,530.80, 113,296.20 and 70,865.20
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Solution
The fourth proportional to 75,530.80, 113,296.20 and 70,865.20 is: 106,297.80
Step by Step Solution
- Step 1: Write the proportion equation
75,530.80 : 113,296.20 = 70,865.20 : x - Step 2: Convert to fraction form
75,530.80/113,296.20 = 70,865.20/x - Step 3: Cross multiply
75,530.80x = 113,296.20 × 70,865.20 - Step 4: Simplify right side
75,530.80x = 8,028,757,872.24 - Step 5: Solve for x
x = 8,028,757,872.24/75,530.80 - Step 6: Final answer
x = 106,297.80
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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.