Finding the Fourth Proportional to 79,367.75, 119,050.31 and 31,981.68
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Solution
The fourth proportional to 79,367.75, 119,050.31 and 31,981.68 is: 47,971.99
Step by Step Solution
- Step 1: Write the proportion equation
79,367.75 : 119,050.31 = 31,981.68 : x - Step 2: Convert to fraction form
79,367.75/119,050.31 = 31,981.68/x - Step 3: Cross multiply
79,367.75x = 119,050.31 × 31,981.68 - Step 4: Simplify right side
79,367.75x = 3,807,428,758.41 - Step 5: Solve for x
x = 3,807,428,758.41/79,367.75 - Step 6: Final answer
x = 47,971.99
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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.