Finding the Fourth Proportional to 87,288.48, 130,939.47 and 28,125.99
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Solution
The fourth proportional to 87,288.48, 130,939.47 and 28,125.99 is: 42,191.16
Step by Step Solution
- Step 1: Write the proportion equation
87,288.48 : 130,939.47 = 28,125.99 : x - Step 2: Convert to fraction form
87,288.48/130,939.47 = 28,125.99/x - Step 3: Cross multiply
87,288.48x = 130,939.47 × 28,125.99 - Step 4: Simplify right side
87,288.48x = 3,682,802,223.83 - Step 5: Solve for x
x = 3,682,802,223.83/87,288.48 - Step 6: Final answer
x = 42,191.16
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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.