Finding the Fourth Proportional to 74,547.54, 111,785.94 and 27,129.06
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Solution
The fourth proportional to 74,547.54, 111,785.94 and 27,129.06 is: 40,680.72
Step by Step Solution
- Step 1: Write the proportion equation
74,547.54 : 111,785.94 = 27,129.06 : x - Step 2: Convert to fraction form
74,547.54/111,785.94 = 27,129.06/x - Step 3: Cross multiply
74,547.54x = 111,785.94 × 27,129.06 - Step 4: Simplify right side
74,547.54x = 3,032,647,473.42 - Step 5: Solve for x
x = 3,032,647,473.42/74,547.54 - Step 6: Final answer
x = 40,680.72
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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.