Finding the Fourth Proportional to 87,463.70, 120,576.68 and 73,980.44
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Solution
The fourth proportional to 87,463.70, 120,576.68 and 73,980.44 is: 101,988.78
Step by Step Solution
- Step 1: Write the proportion equation
87,463.70 : 120,576.68 = 73,980.44 : x - Step 2: Convert to fraction form
87,463.70/120,576.68 = 73,980.44/x - Step 3: Cross multiply
87,463.70x = 120,576.68 × 73,980.44 - Step 4: Simplify right side
87,463.70x = 8,920,315,840.14 - Step 5: Solve for x
x = 8,920,315,840.14/87,463.70 - Step 6: Final answer
x = 101,988.78
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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.