Finding the Fourth Proportional to 66,568,886.40, 99,853,329.60 and 54,475,651.20
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Solution
The fourth proportional to 66,568,886.40, 99,853,329.60 and 54,475,651.20 is: 81,713,476.80
Step by Step Solution
- Step 1: Write the proportion equation
66,568,886.40 : 99,853,329.60 = 54,475,651.20 : x - Step 2: Convert to fraction form
66,568,886.40/99,853,329.60 = 54,475,651.20/x - Step 3: Cross multiply
66,568,886.40x = 99,853,329.60 × 54,475,651.20 - Step 4: Simplify right side
66,568,886.40x = 5,439,575,154,448,235 - Step 5: Solve for x
x = 5,439,575,154,448,235/66,568,886.40 - Step 6: Final answer
x = 81,713,476.80
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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.