Finding the Fourth Proportional to 68,612.80, 102,919.20 and 63,947.20
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Solution
The fourth proportional to 68,612.80, 102,919.20 and 63,947.20 is: 95,920.80
Step by Step Solution
- Step 1: Write the proportion equation
68,612.80 : 102,919.20 = 63,947.20 : x - Step 2: Convert to fraction form
68,612.80/102,919.20 = 63,947.20/x - Step 3: Cross multiply
68,612.80x = 102,919.20 × 63,947.20 - Step 4: Simplify right side
68,612.80x = 6,581,394,666.24 - Step 5: Solve for x
x = 6,581,394,666.24/68,612.80 - Step 6: Final answer
x = 95,920.80
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1.5x scale
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.