Finding the Fourth Proportional to 90,204.44, 135,305.19 and 31,040.62
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Solution
The fourth proportional to 90,204.44, 135,305.19 and 31,040.62 is: 46,560.42
Step by Step Solution
- Step 1: Write the proportion equation
90,204.44 : 135,305.19 = 31,040.62 : x - Step 2: Convert to fraction form
90,204.44/135,305.19 = 31,040.62/x - Step 3: Cross multiply
90,204.44x = 135,305.19 × 31,040.62 - Step 4: Simplify right side
90,204.44x = 4,199,956,648.55 - Step 5: Solve for x
x = 4,199,956,648.55/90,204.44 - Step 6: Final answer
x = 46,560.42
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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.