Finding the Fourth Proportional to 128,004.29, 191,863.35 and 47,965.26
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Solution
The fourth proportional to 128,004.29, 191,863.35 and 47,965.26 is: 71,894.28
Step by Step Solution
- Step 1: Write the proportion equation
128,004.29 : 191,863.35 = 47,965.26 : x - Step 2: Convert to fraction form
128,004.29/191,863.35 = 47,965.26/x - Step 3: Cross multiply
128,004.29x = 191,863.35 × 47,965.26 - Step 4: Simplify right side
128,004.29x = 9,202,775,467.22 - Step 5: Solve for x
x = 9,202,775,467.22/128,004.29 - Step 6: Final answer
x = 71,894.28
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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.