Finding the Fourth Proportional to 86,708.16, 129,329.64 and 84,083.04
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Solution
The fourth proportional to 86,708.16, 129,329.64 and 84,083.04 is: 125,414.14
Step by Step Solution
- Step 1: Write the proportion equation
86,708.16 : 129,329.64 = 84,083.04 : x - Step 2: Convert to fraction form
86,708.16/129,329.64 = 84,083.04/x - Step 3: Cross multiply
86,708.16x = 129,329.64 × 84,083.04 - Step 4: Simplify right side
86,708.16x = 10,874,429,293.31 - Step 5: Solve for x
x = 10,874,429,293.31/86,708.16 - Step 6: Final answer
x = 125,414.14
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.