Finding the Fourth Proportional to 87,876.81, 121,269.36 and 47,589.65
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Solution
The fourth proportional to 87,876.81, 121,269.36 and 47,589.65 is: 65,673.36
Step by Step Solution
- Step 1: Write the proportion equation
87,876.81 : 121,269.36 = 47,589.65 : x - Step 2: Convert to fraction form
87,876.81/121,269.36 = 47,589.65/x - Step 3: Cross multiply
87,876.81x = 121,269.36 × 47,589.65 - Step 4: Simplify right side
87,876.81x = 5,771,165,791.78 - Step 5: Solve for x
x = 5,771,165,791.78/87,876.81 - Step 6: Final answer
x = 65,673.36
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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.