Finding the Fourth Proportional to 25,278,871.55, 34,920,555.53 and 20,115,626.99
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Solution
The fourth proportional to 25,278,871.55, 34,920,555.53 and 20,115,626.99 is: 27,787,983.64
Step by Step Solution
- Step 1: Write the proportion equation
25,278,871.55 : 34,920,555.53 = 20,115,626.99 : x - Step 2: Convert to fraction form
25,278,871.55/34,920,555.53 = 20,115,626.99/x - Step 3: Cross multiply
25,278,871.55x = 34,920,555.53 × 20,115,626.99 - Step 4: Simplify right side
25,278,871.55x = 702,448,869,049,880.75 - Step 5: Solve for x
x = 702,448,869,049,880.75/25,278,871.55 - Step 6: Final answer
x = 27,787,983.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.