Finding the Fourth Proportional to 87,105.79, 130,548.53 and 49,687.02
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Solution
The fourth proportional to 87,105.79, 130,548.53 and 49,687.02 is: 74,467.70
Step by Step Solution
- Step 1: Write the proportion equation
87,105.79 : 130,548.53 = 49,687.02 : x - Step 2: Convert to fraction form
87,105.79/130,548.53 = 49,687.02/x - Step 3: Cross multiply
87,105.79x = 130,548.53 × 49,687.02 - Step 4: Simplify right side
87,105.79x = 6,486,567,421.08 - Step 5: Solve for x
x = 6,486,567,421.08/87,105.79 - Step 6: Final answer
x = 74,467.70
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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.