Finding the Fourth Proportional to 87,879.49, 121,285.76 and 53,881.96
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Solution
The fourth proportional to 87,879.49, 121,285.76 and 53,881.96 is: 74,364.50
Step by Step Solution
- Step 1: Write the proportion equation
87,879.49 : 121,285.76 = 53,881.96 : x - Step 2: Convert to fraction form
87,879.49/121,285.76 = 53,881.96/x - Step 3: Cross multiply
87,879.49x = 121,285.76 × 53,881.96 - Step 4: Simplify right side
87,879.49x = 6,535,114,468.89 - Step 5: Solve for x
x = 6,535,114,468.89/87,879.49 - Step 6: Final answer
x = 74,364.50
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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.