Finding the Fourth Proportional to 87,072.59, 120,161.52 and 48,840.62
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Solution
The fourth proportional to 87,072.59, 120,161.52 and 48,840.62 is: 67,400.81
Step by Step Solution
- Step 1: Write the proportion equation
87,072.59 : 120,161.52 = 48,840.62 : x - Step 2: Convert to fraction form
87,072.59/120,161.52 = 48,840.62/x - Step 3: Cross multiply
87,072.59x = 120,161.52 × 48,840.62 - Step 4: Simplify right side
87,072.59x = 5,868,762,536.13 - Step 5: Solve for x
x = 5,868,762,536.13/87,072.59 - Step 6: Final answer
x = 67,400.81
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1.5x scale
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.