Finding the Fourth Proportional to 81,979,021.96, 122,990,068.84 and 29,461,995.02
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Solution
The fourth proportional to 81,979,021.96, 122,990,068.84 and 29,461,995.02 is: 44,200,732.20
Step by Step Solution
- Step 1: Write the proportion equation
81,979,021.96 : 122,990,068.84 = 29,461,995.02 : x - Step 2: Convert to fraction form
81,979,021.96/122,990,068.84 = 29,461,995.02/x - Step 3: Cross multiply
81,979,021.96x = 122,990,068.84 × 29,461,995.02 - Step 4: Simplify right side
81,979,021.96x = 3,623,532,795,673,537 - Step 5: Solve for x
x = 3,623,532,795,673,537/81,979,021.96 - Step 6: Final answer
x = 44,200,732.20
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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.