Finding the Fourth Proportional to 85,793,565.78, 128,582,639.61 and 46,400,249.09
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Solution
The fourth proportional to 85,793,565.78, 128,582,639.61 and 46,400,249.09 is: 69,542,120.69
Step by Step Solution
- Step 1: Write the proportion equation
85,793,565.78 : 128,582,639.61 = 46,400,249.09 : x - Step 2: Convert to fraction form
85,793,565.78/128,582,639.61 = 46,400,249.09/x - Step 3: Cross multiply
85,793,565.78x = 128,582,639.61 × 46,400,249.09 - Step 4: Simplify right side
85,793,565.78x = 5,966,266,505,678,786 - Step 5: Solve for x
x = 5,966,266,505,678,786/85,793,565.78 - Step 6: Final answer
x = 69,542,120.69
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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.