Finding the Fourth Proportional to 84,380.20, 126,602.97 and 77,490.88
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Solution
The fourth proportional to 84,380.20, 126,602.97 and 77,490.88 is: 116,266.32
Step by Step Solution
- Step 1: Write the proportion equation
84,380.20 : 126,602.97 = 77,490.88 : x - Step 2: Convert to fraction form
84,380.20/126,602.97 = 77,490.88/x - Step 3: Cross multiply
84,380.20x = 126,602.97 × 77,490.88 - Step 4: Simplify right side
84,380.20x = 9,810,575,555.91 - Step 5: Solve for x
x = 9,810,575,555.91/84,380.20 - Step 6: Final answer
x = 116,266.32
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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.