Finding the Fourth Proportional to 89,901.87, 134,813.61 and 47,771.79
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Solution
The fourth proportional to 89,901.87, 134,813.61 and 47,771.79 is: 71,636.86
Step by Step Solution
- Step 1: Write the proportion equation
89,901.87 : 134,813.61 = 47,771.79 : x - Step 2: Convert to fraction form
89,901.87/134,813.61 = 47,771.79/x - Step 3: Cross multiply
89,901.87x = 134,813.61 × 47,771.79 - Step 4: Simplify right side
89,901.87x = 6,440,287,466.06 - Step 5: Solve for x
x = 6,440,287,466.06/89,901.87 - Step 6: Final answer
x = 71,636.86
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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.