Finding the Fourth Proportional to 87,731.34, 120,959.53 and 73,216.42
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Solution
The fourth proportional to 87,731.34, 120,959.53 and 73,216.42 is: 100,947.09
Step by Step Solution
- Step 1: Write the proportion equation
87,731.34 : 120,959.53 = 73,216.42 : x - Step 2: Convert to fraction form
87,731.34/120,959.53 = 73,216.42/x - Step 3: Cross multiply
87,731.34x = 120,959.53 × 73,216.42 - Step 4: Simplify right side
87,731.34x = 8,856,223,751.48 - Step 5: Solve for x
x = 8,856,223,751.48/87,731.34 - Step 6: Final answer
x = 100,947.09
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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.