Finding the Fourth Proportional to 78,080,616.18, 107,751,260.54 and 43,275,553.65
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Solution
The fourth proportional to 78,080,616.18, 107,751,260.54 and 43,275,553.65 is: 59,720,269.70
Step by Step Solution
- Step 1: Write the proportion equation
78,080,616.18 : 107,751,260.54 = 43,275,553.65 : x - Step 2: Convert to fraction form
78,080,616.18/107,751,260.54 = 43,275,553.65/x - Step 3: Cross multiply
78,080,616.18x = 107,751,260.54 × 43,275,553.65 - Step 4: Simplify right side
78,080,616.18x = 4,662,995,456,353,898 - Step 5: Solve for x
x = 4,662,995,456,353,898/78,080,616.18 - Step 6: Final answer
x = 59,720,269.70
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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.