Finding the Fourth Proportional to 80,789.70, 121,128.32 and 35,786.62
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Solution
The fourth proportional to 80,789.70, 121,128.32 and 35,786.62 is: 53,655.02
Step by Step Solution
- Step 1: Write the proportion equation
80,789.70 : 121,128.32 = 35,786.62 : x - Step 2: Convert to fraction form
80,789.70/121,128.32 = 35,786.62/x - Step 3: Cross multiply
80,789.70x = 121,128.32 × 35,786.62 - Step 4: Simplify right side
80,789.70x = 4,334,773,159.08 - Step 5: Solve for x
x = 4,334,773,159.08/80,789.70 - Step 6: Final answer
x = 53,655.02
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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.