Finding the Fourth Proportional to 86,439.63, 129,659.47 and 27,279.93
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Solution
The fourth proportional to 86,439.63, 129,659.47 and 27,279.93 is: 40,919.90
Step by Step Solution
- Step 1: Write the proportion equation
86,439.63 : 129,659.47 = 27,279.93 : x - Step 2: Convert to fraction form
86,439.63/129,659.47 = 27,279.93/x - Step 3: Cross multiply
86,439.63x = 129,659.47 × 27,279.93 - Step 4: Simplify right side
86,439.63x = 3,537,101,197.24 - Step 5: Solve for x
x = 3,537,101,197.24/86,439.63 - Step 6: Final answer
x = 40,919.90
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1.5x scale
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.