Finding the Fourth Proportional to 76,825.20, 115,237.80 and 68,530.80
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Solution
The fourth proportional to 76,825.20, 115,237.80 and 68,530.80 is: 102,796.20
Step by Step Solution
- Step 1: Write the proportion equation
76,825.20 : 115,237.80 = 68,530.80 : x - Step 2: Convert to fraction form
76,825.20/115,237.80 = 68,530.80/x - Step 3: Cross multiply
76,825.20x = 115,237.80 × 68,530.80 - Step 4: Simplify right side
76,825.20x = 7,897,338,624.24 - Step 5: Solve for x
x = 7,897,338,624.24/76,825.20 - Step 6: Final answer
x = 102,796.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.