Finding the Fourth Proportional to 76,764.98, 115,272.52 and 47,369.68
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Solution
The fourth proportional to 76,764.98, 115,272.52 and 47,369.68 is: 71,131.69
Step by Step Solution
- Step 1: Write the proportion equation
76,764.98 : 115,272.52 = 47,369.68 : x - Step 2: Convert to fraction form
76,764.98/115,272.52 = 47,369.68/x - Step 3: Cross multiply
76,764.98x = 115,272.52 × 47,369.68 - Step 4: Simplify right side
76,764.98x = 5,460,422,385.19 - Step 5: Solve for x
x = 5,460,422,385.19/76,764.98 - Step 6: Final answer
x = 71,131.69
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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.