Finding the Fourth Proportional to 86,859.13, 119,865.60 and 47,115.13
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Solution
The fourth proportional to 86,859.13, 119,865.60 and 47,115.13 is: 65,018.88
Step by Step Solution
- Step 1: Write the proportion equation
86,859.13 : 119,865.60 = 47,115.13 : x - Step 2: Convert to fraction form
86,859.13/119,865.60 = 47,115.13/x - Step 3: Cross multiply
86,859.13x = 119,865.60 × 47,115.13 - Step 4: Simplify right side
86,859.13x = 5,647,483,326.53 - Step 5: Solve for x
x = 5,647,483,326.53/86,859.13 - Step 6: Final answer
x = 65,018.88
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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.