Finding the Fourth Proportional to 86,639.88, 119,552.18 and 48,390.28
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Solution
The fourth proportional to 86,639.88, 119,552.18 and 48,390.28 is: 66,772.52
Step by Step Solution
- Step 1: Write the proportion equation
86,639.88 : 119,552.18 = 48,390.28 : x - Step 2: Convert to fraction form
86,639.88/119,552.18 = 48,390.28/x - Step 3: Cross multiply
86,639.88x = 119,552.18 × 48,390.28 - Step 4: Simplify right side
86,639.88x = 5,785,163,464.81 - Step 5: Solve for x
x = 5,785,163,464.81/86,639.88 - Step 6: Final answer
x = 66,772.52
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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.