Finding the Fourth Proportional to 70,697.80, 106,044.30 and 18,107.80
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Solution
The fourth proportional to 70,697.80, 106,044.30 and 18,107.80 is: 27,161.09
Step by Step Solution
- Step 1: Write the proportion equation
70,697.80 : 106,044.30 = 18,107.80 : x - Step 2: Convert to fraction form
70,697.80/106,044.30 = 18,107.80/x - Step 3: Cross multiply
70,697.80x = 106,044.30 × 18,107.80 - Step 4: Simplify right side
70,697.80x = 1,920,228,975.54 - Step 5: Solve for x
x = 1,920,228,975.54/70,697.80 - Step 6: Final answer
x = 27,161.09
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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.