Finding the Fourth Proportional to 79,351.71, 119,028.26 and 20,187.44
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Solution
The fourth proportional to 79,351.71, 119,028.26 and 20,187.44 is: 30,281.34
Step by Step Solution
- Step 1: Write the proportion equation
79,351.71 : 119,028.26 = 20,187.44 : x - Step 2: Convert to fraction form
79,351.71/119,028.26 = 20,187.44/x - Step 3: Cross multiply
79,351.71x = 119,028.26 × 20,187.44 - Step 4: Simplify right side
79,351.71x = 2,402,875,857.05 - Step 5: Solve for x
x = 2,402,875,857.05/79,351.71 - Step 6: Final answer
x = 30,281.34
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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.