Finding the Fourth Proportional to 87,782.14, 121,138.49 and 47,495.02
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Solution
The fourth proportional to 87,782.14, 121,138.49 and 47,495.02 is: 65,542.66
Step by Step Solution
- Step 1: Write the proportion equation
87,782.14 : 121,138.49 = 47,495.02 : x - Step 2: Convert to fraction form
87,782.14/121,138.49 = 47,495.02/x - Step 3: Cross multiply
87,782.14x = 121,138.49 × 47,495.02 - Step 4: Simplify right side
87,782.14x = 5,753,475,048.35 - Step 5: Solve for x
x = 5,753,475,048.35/87,782.14 - Step 6: Final answer
x = 65,542.66
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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.