Finding the Fourth Proportional to 112,979,990.20, 169,485,731.70 and 48,283,281.40
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Solution
The fourth proportional to 112,979,990.20, 169,485,731.70 and 48,283,281.40 is: 72,431,651.50
Step by Step Solution
- Step 1: Write the proportion equation
112,979,990.20 : 169,485,731.70 = 48,283,281.40 : x - Step 2: Convert to fraction form
112,979,990.20/169,485,731.70 = 48,283,281.40/x - Step 3: Cross multiply
112,979,990.20x = 169,485,731.70 × 48,283,281.40 - Step 4: Simplify right side
112,979,990.20x = 8,183,327,276,956,000 - Step 5: Solve for x
x = 8,183,327,276,956,000/112,979,990.20 - Step 6: Final answer
x = 72,431,651.50
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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.