Finding the Fourth Proportional to 105,626.04, 145,761.42 and 57,877.08
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Solution
The fourth proportional to 105,626.04, 145,761.42 and 57,877.08 is: 79,868.99
Step by Step Solution
- Step 1: Write the proportion equation
105,626.04 : 145,761.42 = 57,877.08 : x - Step 2: Convert to fraction form
105,626.04/145,761.42 = 57,877.08/x - Step 3: Cross multiply
105,626.04x = 145,761.42 × 57,877.08 - Step 4: Simplify right side
105,626.04x = 8,436,245,366.25 - Step 5: Solve for x
x = 8,436,245,366.25/105,626.04 - Step 6: Final answer
x = 79,868.99
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1.5x scale
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.