Finding the Fourth Proportional to 74,639.24, 111,988.04 and 27,881.20
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Solution
The fourth proportional to 74,639.24, 111,988.04 and 27,881.20 is: 41,832.70
Step by Step Solution
- Step 1: Write the proportion equation
74,639.24 : 111,988.04 = 27,881.20 : x - Step 2: Convert to fraction form
74,639.24/111,988.04 = 27,881.20/x - Step 3: Cross multiply
74,639.24x = 111,988.04 × 27,881.20 - Step 4: Simplify right side
74,639.24x = 3,122,360,940.85 - Step 5: Solve for x
x = 3,122,360,940.85/74,639.24 - Step 6: Final answer
x = 41,832.70
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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.