Finding the Fourth Proportional to 76,686.75, 115,077.93 and 29,306.07
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Solution
The fourth proportional to 76,686.75, 115,077.93 and 29,306.07 is: 43,977.37
Step by Step Solution
- Step 1: Write the proportion equation
76,686.75 : 115,077.93 = 29,306.07 : x - Step 2: Convert to fraction form
76,686.75/115,077.93 = 29,306.07/x - Step 3: Cross multiply
76,686.75x = 115,077.93 × 29,306.07 - Step 4: Simplify right side
76,686.75x = 3,372,481,872.04 - Step 5: Solve for x
x = 3,372,481,872.04/76,686.75 - Step 6: Final answer
x = 43,977.37
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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.