Finding the Fourth Proportional to 76,765.20, 115,272.84 and 47,369.76
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Solution
The fourth proportional to 76,765.20, 115,272.84 and 47,369.76 is: 71,131.80
Step by Step Solution
- Step 1: Write the proportion equation
76,765.20 : 115,272.84 = 47,369.76 : x - Step 2: Convert to fraction form
76,765.20/115,272.84 = 47,369.76/x - Step 3: Cross multiply
76,765.20x = 115,272.84 × 47,369.76 - Step 4: Simplify right side
76,765.20x = 5,460,446,765.32 - Step 5: Solve for x
x = 5,460,446,765.32/76,765.20 - Step 6: Final answer
x = 71,131.80
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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.