Finding the Fourth Proportional to 78,080,618.18, 107,751,263.30 and 43,275,555.65
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Solution
The fourth proportional to 78,080,618.18, 107,751,263.30 and 43,275,555.65 is: 59,720,272.45
Step by Step Solution
- Step 1: Write the proportion equation
78,080,618.18 : 107,751,263.30 = 43,275,555.65 : x - Step 2: Convert to fraction form
78,080,618.18/107,751,263.30 = 43,275,555.65/x - Step 3: Cross multiply
78,080,618.18x = 107,751,263.30 × 43,275,555.65 - Step 4: Simplify right side
78,080,618.18x = 4,662,995,790,541,819 - Step 5: Solve for x
x = 4,662,995,790,541,819/78,080,618.18 - Step 6: Final answer
x = 59,720,272.45
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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.