Finding the Fourth Proportional to 81,870,489.09, 122,432,728.41 and 61,135,488.10
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Solution
The fourth proportional to 81,870,489.09, 122,432,728.41 and 61,135,488.10 is: 91,424,696.42
Step by Step Solution
- Step 1: Write the proportion equation
81,870,489.09 : 122,432,728.41 = 61,135,488.10 : x - Step 2: Convert to fraction form
81,870,489.09/122,432,728.41 = 61,135,488.10/x - Step 3: Cross multiply
81,870,489.09x = 122,432,728.41 × 61,135,488.10 - Step 4: Simplify right side
81,870,489.09x = 7,484,984,610,760,087 - Step 5: Solve for x
x = 7,484,984,610,760,087/81,870,489.09 - Step 6: Final answer
x = 91,424,696.42
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.