Finding the Fourth Proportional to 87,492.79, 131,260.09 and 28,328.53
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Solution
The fourth proportional to 87,492.79, 131,260.09 and 28,328.53 is: 42,499.56
Step by Step Solution
- Step 1: Write the proportion equation
87,492.79 : 131,260.09 = 28,328.53 : x - Step 2: Convert to fraction form
87,492.79/131,260.09 = 28,328.53/x - Step 3: Cross multiply
87,492.79x = 131,260.09 × 28,328.53 - Step 4: Simplify right side
87,492.79x = 3,718,404,741.07 - Step 5: Solve for x
x = 3,718,404,741.07/87,492.79 - Step 6: Final answer
x = 42,499.56
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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.