Finding the Fourth Proportional to 67,986.62, 101,994.37 and 28,520.99
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Solution
The fourth proportional to 67,986.62, 101,994.37 and 28,520.99 is: 42,787.54
Step by Step Solution
- Step 1: Write the proportion equation
67,986.62 : 101,994.37 = 28,520.99 : x - Step 2: Convert to fraction form
67,986.62/101,994.37 = 28,520.99/x - Step 3: Cross multiply
67,986.62x = 101,994.37 × 28,520.99 - Step 4: Simplify right side
67,986.62x = 2,908,980,406.83 - Step 5: Solve for x
x = 2,908,980,406.83/67,986.62 - Step 6: Final answer
x = 42,787.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.