Finding the Fourth Proportional to 91,246.91, 136,866.21 and 31,280.70
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Solution
The fourth proportional to 91,246.91, 136,866.21 and 31,280.70 is: 46,919.63
Step by Step Solution
- Step 1: Write the proportion equation
91,246.91 : 136,866.21 = 31,280.70 : x - Step 2: Convert to fraction form
91,246.91/136,866.21 = 31,280.70/x - Step 3: Cross multiply
91,246.91x = 136,866.21 × 31,280.70 - Step 4: Simplify right side
91,246.91x = 4,281,270,855.15 - Step 5: Solve for x
x = 4,281,270,855.15/91,246.91 - Step 6: Final answer
x = 46,919.63
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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.