Finding the Fourth Proportional to 87,805.39, 121,171.74 and 47,519.14
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Solution
The fourth proportional to 87,805.39, 121,171.74 and 47,519.14 is: 65,576.57
Step by Step Solution
- Step 1: Write the proportion equation
87,805.39 : 121,171.74 = 47,519.14 : x - Step 2: Convert to fraction form
87,805.39/121,171.74 = 47,519.14/x - Step 3: Cross multiply
87,805.39x = 121,171.74 × 47,519.14 - Step 4: Simplify right side
87,805.39x = 5,757,976,271.24 - Step 5: Solve for x
x = 5,757,976,271.24/87,805.39 - Step 6: Final answer
x = 65,576.57
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.