Finding the Fourth Proportional to 18,101,489.70, 27,149,610.15 and 5,320,661.70
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Solution
The fourth proportional to 18,101,489.70, 27,149,610.15 and 5,320,661.70 is: 7,980,221.15
Step by Step Solution
- Step 1: Write the proportion equation
18,101,489.70 : 27,149,610.15 = 5,320,661.70 : x - Step 2: Convert to fraction form
18,101,489.70/27,149,610.15 = 5,320,661.70/x - Step 3: Cross multiply
18,101,489.70x = 27,149,610.15 × 5,320,661.70 - Step 4: Simplify right side
18,101,489.70x = 144,453,890,895,036.25 - Step 5: Solve for x
x = 144,453,890,895,036.25/18,101,489.70 - Step 6: Final answer
x = 7,980,221.15
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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.