Finding the Fourth Proportional to 72,798.84, 109,178.58 and 31,236.12
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Solution
The fourth proportional to 72,798.84, 109,178.58 and 31,236.12 is: 46,845.74
Step by Step Solution
- Step 1: Write the proportion equation
72,798.84 : 109,178.58 = 31,236.12 : x - Step 2: Convert to fraction form
72,798.84/109,178.58 = 31,236.12/x - Step 3: Cross multiply
72,798.84x = 109,178.58 × 31,236.12 - Step 4: Simplify right side
72,798.84x = 3,410,315,226.31 - Step 5: Solve for x
x = 3,410,315,226.31/72,798.84 - Step 6: Final answer
x = 46,845.74
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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.