Finding the Fourth Proportional to 87,905.08, 121,278.90 and 49,660.12
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Solution
The fourth proportional to 87,905.08, 121,278.90 and 49,660.12 is: 68,513.96
Step by Step Solution
- Step 1: Write the proportion equation
87,905.08 : 121,278.90 = 49,660.12 : x - Step 2: Convert to fraction form
87,905.08/121,278.90 = 49,660.12/x - Step 3: Cross multiply
87,905.08x = 121,278.90 × 49,660.12 - Step 4: Simplify right side
87,905.08x = 6,022,724,727.47 - Step 5: Solve for x
x = 6,022,724,727.47/87,905.08 - Step 6: Final answer
x = 68,513.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.