Finding the Fourth Proportional to 66,888,425.92, 100,321,899.36 and 18,354,945.28
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Solution
The fourth proportional to 66,888,425.92, 100,321,899.36 and 18,354,945.28 is: 27,529,470.87
Step by Step Solution
- Step 1: Write the proportion equation
66,888,425.92 : 100,321,899.36 = 18,354,945.28 : x - Step 2: Convert to fraction form
66,888,425.92/100,321,899.36 = 18,354,945.28/x - Step 3: Cross multiply
66,888,425.92x = 100,321,899.36 × 18,354,945.28 - Step 4: Simplify right side
66,888,425.92x = 1,841,402,973,138,467.25 - Step 5: Solve for x
x = 1,841,402,973,138,467.25/66,888,425.92 - Step 6: Final answer
x = 27,529,470.87
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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.