Finding the Fourth Proportional to 100,374.10, 138,515.84 and 55,050.88
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Solution
The fourth proportional to 100,374.10, 138,515.84 and 55,050.88 is: 75,969.99
Step by Step Solution
- Step 1: Write the proportion equation
100,374.10 : 138,515.84 = 55,050.88 : x - Step 2: Convert to fraction form
100,374.10/138,515.84 = 55,050.88/x - Step 3: Cross multiply
100,374.10x = 138,515.84 × 55,050.88 - Step 4: Simplify right side
100,374.10x = 7,625,418,885.94 - Step 5: Solve for x
x = 7,625,418,885.94/100,374.10 - Step 6: Final answer
x = 75,969.99
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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.