Finding the Fourth Proportional to 75,451.68, 104,129.52 and 48,649.98
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Solution
The fourth proportional to 75,451.68, 104,129.52 and 48,649.98 is: 67,140.97
Step by Step Solution
- Step 1: Write the proportion equation
75,451.68 : 104,129.52 = 48,649.98 : x - Step 2: Convert to fraction form
75,451.68/104,129.52 = 48,649.98/x - Step 3: Cross multiply
75,451.68x = 104,129.52 × 48,649.98 - Step 4: Simplify right side
75,451.68x = 5,065,899,065.41 - Step 5: Solve for x
x = 5,065,899,065.41/75,451.68 - Step 6: Final answer
x = 67,140.97
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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.