Finding the Fourth Proportional to 87,157.97, 120,290.06 and 48,919.79
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Solution
The fourth proportional to 87,157.97, 120,290.06 and 48,919.79 is: 67,516.08
Step by Step Solution
- Step 1: Write the proportion equation
87,157.97 : 120,290.06 = 48,919.79 : x - Step 2: Convert to fraction form
87,157.97/120,290.06 = 48,919.79/x - Step 3: Cross multiply
87,157.97x = 120,290.06 × 48,919.79 - Step 4: Simplify right side
87,157.97x = 5,884,564,474.29 - Step 5: Solve for x
x = 5,884,564,474.29/87,157.97 - Step 6: Final answer
x = 67,516.08
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.