Finding the Fourth Proportional to 78,203.04, 107,891.91 and 51,360.09
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Solution
The fourth proportional to 78,203.04, 107,891.91 and 51,360.09 is: 70,858.35
Step by Step Solution
- Step 1: Write the proportion equation
78,203.04 : 107,891.91 = 51,360.09 : x - Step 2: Convert to fraction form
78,203.04/107,891.91 = 51,360.09/x - Step 3: Cross multiply
78,203.04x = 107,891.91 × 51,360.09 - Step 4: Simplify right side
78,203.04x = 5,541,338,207.87 - Step 5: Solve for x
x = 5,541,338,207.87/78,203.04 - Step 6: Final answer
x = 70,858.35
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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.