Finding the Fourth Proportional to 87,778.36, 121,133.98 and 47,491.96
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Solution
The fourth proportional to 87,778.36, 121,133.98 and 47,491.96 is: 65,538.82
Step by Step Solution
- Step 1: Write the proportion equation
87,778.36 : 121,133.98 = 47,491.96 : x - Step 2: Convert to fraction form
87,778.36/121,133.98 = 47,491.96/x - Step 3: Cross multiply
87,778.36x = 121,133.98 × 47,491.96 - Step 4: Simplify right side
87,778.36x = 5,752,890,132.80 - Step 5: Solve for x
x = 5,752,890,132.80/87,778.36 - Step 6: Final answer
x = 65,538.82
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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.