Finding the Fourth Proportional to 83,647.92, 115,395.12 and 51,805.20
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Solution
The fourth proportional to 83,647.92, 115,395.12 and 51,805.20 is: 71,467.02
Step by Step Solution
- Step 1: Write the proportion equation
83,647.92 : 115,395.12 = 51,805.20 : x - Step 2: Convert to fraction form
83,647.92/115,395.12 = 51,805.20/x - Step 3: Cross multiply
83,647.92x = 115,395.12 × 51,805.20 - Step 4: Simplify right side
83,647.92x = 5,978,067,270.62 - Step 5: Solve for x
x = 5,978,067,270.62/83,647.92 - Step 6: Final answer
x = 71,467.02
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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.