Finding the Fourth Proportional to 87,473.99, 130,528.47 and 78,049.19
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Solution
The fourth proportional to 87,473.99, 130,528.47 and 78,049.19 is: 116,464.81
Step by Step Solution
- Step 1: Write the proportion equation
87,473.99 : 130,528.47 = 78,049.19 : x - Step 2: Convert to fraction form
87,473.99/130,528.47 = 78,049.19/x - Step 3: Cross multiply
87,473.99x = 130,528.47 × 78,049.19 - Step 4: Simplify right side
87,473.99x = 10,187,640,702.80 - Step 5: Solve for x
x = 10,187,640,702.80/87,473.99 - Step 6: Final answer
x = 116,464.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.