Finding the Fourth Proportional to 71,243.76, 106,890.20 and 31,828.08
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Solution
The fourth proportional to 71,243.76, 106,890.20 and 31,828.08 is: 47,753.09
Step by Step Solution
- Step 1: Write the proportion equation
71,243.76 : 106,890.20 = 31,828.08 : x - Step 2: Convert to fraction form
71,243.76/106,890.20 = 31,828.08/x - Step 3: Cross multiply
71,243.76x = 106,890.20 × 31,828.08 - Step 4: Simplify right side
71,243.76x = 3,402,109,836.82 - Step 5: Solve for x
x = 3,402,109,836.82/71,243.76 - Step 6: Final answer
x = 47,753.09
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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.