Finding the Fourth Proportional to 81,267.13, 121,949.13 and 36,284.99
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Solution
The fourth proportional to 81,267.13, 121,949.13 and 36,284.99 is: 54,449.11
Step by Step Solution
- Step 1: Write the proportion equation
81,267.13 : 121,949.13 = 36,284.99 : x - Step 2: Convert to fraction form
81,267.13/121,949.13 = 36,284.99/x - Step 3: Cross multiply
81,267.13x = 121,949.13 × 36,284.99 - Step 4: Simplify right side
81,267.13x = 4,424,922,962.56 - Step 5: Solve for x
x = 4,424,922,962.56/81,267.13 - Step 6: Final answer
x = 54,449.11
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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.