Finding the Fourth Proportional to 7,142,756.36, 9,857,076.66 and 3,879,603.08
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Solution
The fourth proportional to 7,142,756.36, 9,857,076.66 and 3,879,603.08 is: 5,353,891.84
Step by Step Solution
- Step 1: Write the proportion equation
7,142,756.36 : 9,857,076.66 = 3,879,603.08 : x - Step 2: Convert to fraction form
7,142,756.36/9,857,076.66 = 3,879,603.08/x - Step 3: Cross multiply
7,142,756.36x = 9,857,076.66 × 3,879,603.08 - Step 4: Simplify right side
7,142,756.36x = 38,241,544,969,932.12 - Step 5: Solve for x
x = 38,241,544,969,932.12/7,142,756.36 - Step 6: Final answer
x = 5,353,891.84
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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.