Finding the Fourth Proportional to 87,492.74, 131,241.12 and 31,336.70
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Solution
The fourth proportional to 87,492.74, 131,241.12 and 31,336.70 is: 47,005.77
Step by Step Solution
- Step 1: Write the proportion equation
87,492.74 : 131,241.12 = 31,336.70 : x - Step 2: Convert to fraction form
87,492.74/131,241.12 = 31,336.70/x - Step 3: Cross multiply
87,492.74x = 131,241.12 × 31,336.70 - Step 4: Simplify right side
87,492.74x = 4,112,663,605.10 - Step 5: Solve for x
x = 4,112,663,605.10/87,492.74 - Step 6: Final answer
x = 47,005.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.