Finding the Fourth Proportional to 87,865.79, 121,249.99 and 52,059.11
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Solution
The fourth proportional to 87,865.79, 121,249.99 and 52,059.11 is: 71,838.73
Step by Step Solution
- Step 1: Write the proportion equation
87,865.79 : 121,249.99 = 52,059.11 : x - Step 2: Convert to fraction form
87,865.79/121,249.99 = 52,059.11/x - Step 3: Cross multiply
87,865.79x = 121,249.99 × 52,059.11 - Step 4: Simplify right side
87,865.79x = 6,312,166,566.91 - Step 5: Solve for x
x = 6,312,166,566.91/87,865.79 - Step 6: Final answer
x = 71,838.73
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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.