Finding the Fourth Proportional to 86,275.14, 129,418.29 and 27,113.28
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Solution
The fourth proportional to 86,275.14, 129,418.29 and 27,113.28 is: 40,671.67
Step by Step Solution
- Step 1: Write the proportion equation
86,275.14 : 129,418.29 = 27,113.28 : x - Step 2: Convert to fraction form
86,275.14/129,418.29 = 27,113.28/x - Step 3: Cross multiply
86,275.14x = 129,418.29 × 27,113.28 - Step 4: Simplify right side
86,275.14x = 3,508,954,333.89 - Step 5: Solve for x
x = 3,508,954,333.89/86,275.14 - Step 6: Final answer
x = 40,671.67
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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.