Finding the Fourth Proportional to 113,085.70, 169,628.55 and 29,979.70
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Solution
The fourth proportional to 113,085.70, 169,628.55 and 29,979.70 is: 44,969.55
Step by Step Solution
- Step 1: Write the proportion equation
113,085.70 : 169,628.55 = 29,979.70 : x - Step 2: Convert to fraction form
113,085.70/169,628.55 = 29,979.70/x - Step 3: Cross multiply
113,085.70x = 169,628.55 × 29,979.70 - Step 4: Simplify right side
113,085.70x = 5,085,413,040.44 - Step 5: Solve for x
x = 5,085,413,040.44/113,085.70 - Step 6: Final answer
x = 44,969.55
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1.5x scale
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.