Finding the Fourth Proportional to 75,871.80, 113,807.70 and 71,983.80
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Solution
The fourth proportional to 75,871.80, 113,807.70 and 71,983.80 is: 107,975.70
Step by Step Solution
- Step 1: Write the proportion equation
75,871.80 : 113,807.70 = 71,983.80 : x - Step 2: Convert to fraction form
75,871.80/113,807.70 = 71,983.80/x - Step 3: Cross multiply
75,871.80x = 113,807.70 × 71,983.80 - Step 4: Simplify right side
75,871.80x = 8,192,310,715.26 - Step 5: Solve for x
x = 8,192,310,715.26/75,871.80 - Step 6: Final answer
x = 107,975.70
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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.