Finding the Fourth Proportional to 18,613,419.20, 27,920,750.88 and 5,149,119.68
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Solution
The fourth proportional to 18,613,419.20, 27,920,750.88 and 5,149,119.68 is: 7,723,851.61
Step by Step Solution
- Step 1: Write the proportion equation
18,613,419.20 : 27,920,750.88 = 5,149,119.68 : x - Step 2: Convert to fraction form
18,613,419.20/27,920,750.88 = 5,149,119.68/x - Step 3: Cross multiply
18,613,419.20x = 27,920,750.88 × 5,149,119.68 - Step 4: Simplify right side
18,613,419.20x = 143,767,287,836,585.31 - Step 5: Solve for x
x = 143,767,287,836,585.31/18,613,419.20 - Step 6: Final answer
x = 7,723,851.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.