Finding the Fourth Proportional to 105,692.70, 145,857.12 and 60,376.68
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Solution
The fourth proportional to 105,692.70, 145,857.12 and 60,376.68 is: 83,320.50
Step by Step Solution
- Step 1: Write the proportion equation
105,692.70 : 145,857.12 = 60,376.68 : x - Step 2: Convert to fraction form
105,692.70/145,857.12 = 60,376.68/x - Step 3: Cross multiply
105,692.70x = 145,857.12 × 60,376.68 - Step 4: Simplify right side
105,692.70x = 8,806,368,659.96 - Step 5: Solve for x
x = 8,806,368,659.96/105,692.70 - Step 6: Final answer
x = 83,320.50
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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.