Finding the Fourth Proportional to 105,639.12, 158,520.95 and 39,125.95
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Solution
The fourth proportional to 105,639.12, 158,520.95 and 39,125.95 is: 58,711.99
Step by Step Solution
- Step 1: Write the proportion equation
105,639.12 : 158,520.95 = 39,125.95 : x - Step 2: Convert to fraction form
105,639.12/158,520.95 = 39,125.95/x - Step 3: Cross multiply
105,639.12x = 158,520.95 × 39,125.95 - Step 4: Simplify right side
105,639.12x = 6,202,282,764.28 - Step 5: Solve for x
x = 6,202,282,764.28/105,639.12 - Step 6: Final answer
x = 58,711.99
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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.