Finding the Fourth Proportional to 87,761.13, 121,109.99 and 47,474.79
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Solution
The fourth proportional to 87,761.13, 121,109.99 and 47,474.79 is: 65,515.02
Step by Step Solution
- Step 1: Write the proportion equation
87,761.13 : 121,109.99 = 47,474.79 : x - Step 2: Convert to fraction form
87,761.13/121,109.99 = 47,474.79/x - Step 3: Cross multiply
87,761.13x = 121,109.99 × 47,474.79 - Step 4: Simplify right side
87,761.13x = 5,749,671,732.43 - Step 5: Solve for x
x = 5,749,671,732.43/87,761.13 - Step 6: Final answer
x = 65,515.02
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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.