Finding the Fourth Proportional to 87,644.34, 120,949.16 and 47,358.09
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Solution
The fourth proportional to 87,644.34, 120,949.16 and 47,358.09 is: 65,354.15
Step by Step Solution
- Step 1: Write the proportion equation
87,644.34 : 120,949.16 = 47,358.09 : x - Step 2: Convert to fraction form
87,644.34/120,949.16 = 47,358.09/x - Step 3: Cross multiply
87,644.34x = 120,949.16 × 47,358.09 - Step 4: Simplify right side
87,644.34x = 5,727,920,967.91 - Step 5: Solve for x
x = 5,727,920,967.91/87,644.34 - Step 6: Final answer
x = 65,354.15
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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.