Finding the Fourth Proportional to 68,945,344.84, 103,386,221.34 and 20,405,842.12
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Solution
The fourth proportional to 68,945,344.84, 103,386,221.34 and 20,405,842.12 is: 30,599,352.50
Step by Step Solution
- Step 1: Write the proportion equation
68,945,344.84 : 103,386,221.34 = 20,405,842.12 : x - Step 2: Convert to fraction form
68,945,344.84/103,386,221.34 = 20,405,842.12/x - Step 3: Cross multiply
68,945,344.84x = 103,386,221.34 × 20,405,842.12 - Step 4: Simplify right side
68,945,344.84x = 2,109,682,910,047,415 - Step 5: Solve for x
x = 2,109,682,910,047,415/68,945,344.84 - Step 6: Final answer
x = 30,599,352.50
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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.