Finding the Fourth Proportional to 89,642,979.70, 134,464,469.55 and 81,990,229.30
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Solution
The fourth proportional to 89,642,979.70, 134,464,469.55 and 81,990,229.30 is: 122,985,343.95
Step by Step Solution
- Step 1: Write the proportion equation
89,642,979.70 : 134,464,469.55 = 81,990,229.30 : x - Step 2: Convert to fraction form
89,642,979.70/134,464,469.55 = 81,990,229.30/x - Step 3: Cross multiply
89,642,979.70x = 134,464,469.55 × 81,990,229.30 - Step 4: Simplify right side
89,642,979.70x = 11,024,772,691,107,368 - Step 5: Solve for x
x = 11,024,772,691,107,368/89,642,979.70 - Step 6: Final answer
x = 122,985,343.95
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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.