Finding the Fourth Proportional to 99,694.70, 137,574.88 and 54,982.70
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Solution
The fourth proportional to 99,694.70, 137,574.88 and 54,982.70 is: 75,874.02
Step by Step Solution
- Step 1: Write the proportion equation
99,694.70 : 137,574.88 = 54,982.70 : x - Step 2: Convert to fraction form
99,694.70/137,574.88 = 54,982.70/x - Step 3: Cross multiply
99,694.70x = 137,574.88 × 54,982.70 - Step 4: Simplify right side
99,694.70x = 7,564,237,529.24 - Step 5: Solve for x
x = 7,564,237,529.24/99,694.70 - Step 6: Final answer
x = 75,874.02
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.