Finding the Fourth Proportional to 87,456.29, 120,698.84 and 51,649.63
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Solution
The fourth proportional to 87,456.29, 120,698.84 and 51,649.63 is: 71,281.90
Step by Step Solution
- Step 1: Write the proportion equation
87,456.29 : 120,698.84 = 51,649.63 : x - Step 2: Convert to fraction form
87,456.29/120,698.84 = 51,649.63/x - Step 3: Cross multiply
87,456.29x = 120,698.84 × 51,649.63 - Step 4: Simplify right side
87,456.29x = 6,234,050,254.81 - Step 5: Solve for x
x = 6,234,050,254.81/87,456.29 - Step 6: Final answer
x = 71,281.90
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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.