Finding the Fourth Proportional to 18,126,990.76, 27,190,219.54 and 4,480,138.48
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Solution
The fourth proportional to 18,126,990.76, 27,190,219.54 and 4,480,138.48 is: 6,720,141.83
Step by Step Solution
- Step 1: Write the proportion equation
18,126,990.76 : 27,190,219.54 = 4,480,138.48 : x - Step 2: Convert to fraction form
18,126,990.76/27,190,219.54 = 4,480,138.48/x - Step 3: Cross multiply
18,126,990.76x = 27,190,219.54 × 4,480,138.48 - Step 4: Simplify right side
18,126,990.76x = 121,815,948,840,801.91 - Step 5: Solve for x
x = 121,815,948,840,801.91/18,126,990.76 - Step 6: Final answer
x = 6,720,141.83
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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.