Finding the Fourth Proportional to 76,964.80, 115,447.20 and 50,699.20
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Solution
The fourth proportional to 76,964.80, 115,447.20 and 50,699.20 is: 76,048.80
Step by Step Solution
- Step 1: Write the proportion equation
76,964.80 : 115,447.20 = 50,699.20 : x - Step 2: Convert to fraction form
76,964.80/115,447.20 = 50,699.20/x - Step 3: Cross multiply
76,964.80x = 115,447.20 × 50,699.20 - Step 4: Simplify right side
76,964.80x = 5,853,080,682.24 - Step 5: Solve for x
x = 5,853,080,682.24/76,964.80 - Step 6: Final answer
x = 76,048.80
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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.