Finding the Fourth Proportional to 81,198.84, 121,792.80 and 28,601.49
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Solution
The fourth proportional to 81,198.84, 121,792.80 and 28,601.49 is: 42,900.31
Step by Step Solution
- Step 1: Write the proportion equation
81,198.84 : 121,792.80 = 28,601.49 : x - Step 2: Convert to fraction form
81,198.84/121,792.80 = 28,601.49/x - Step 3: Cross multiply
81,198.84x = 121,792.80 × 28,601.49 - Step 4: Simplify right side
81,198.84x = 3,483,455,551.27 - Step 5: Solve for x
x = 3,483,455,551.27/81,198.84 - Step 6: Final answer
x = 42,900.31
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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.