Finding the Fourth Proportional to 79,609.20, 119,490.60 and 40,210.80
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Solution
The fourth proportional to 79,609.20, 119,490.60 and 40,210.80 is: 60,354.99
Step by Step Solution
- Step 1: Write the proportion equation
79,609.20 : 119,490.60 = 40,210.80 : x - Step 2: Convert to fraction form
79,609.20/119,490.60 = 40,210.80/x - Step 3: Cross multiply
79,609.20x = 119,490.60 × 40,210.80 - Step 4: Simplify right side
79,609.20x = 4,804,812,618.48 - Step 5: Solve for x
x = 4,804,812,618.48/79,609.20 - Step 6: Final answer
x = 60,354.99
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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.