Finding the Fourth Proportional to 9,181,387.80, 13,772,081.70 and 7,764,211.80
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Solution
The fourth proportional to 9,181,387.80, 13,772,081.70 and 7,764,211.80 is: 11,646,317.70
Step by Step Solution
- Step 1: Write the proportion equation
9,181,387.80 : 13,772,081.70 = 7,764,211.80 : x - Step 2: Convert to fraction form
9,181,387.80/13,772,081.70 = 7,764,211.80/x - Step 3: Cross multiply
9,181,387.80x = 13,772,081.70 × 7,764,211.80 - Step 4: Simplify right side
9,181,387.80x = 106,929,359,245,704.05 - Step 5: Solve for x
x = 106,929,359,245,704.05/9,181,387.80 - Step 6: Final answer
x = 11,646,317.70
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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.