Finding the Fourth Proportional to 79,673.18, 119,509.86 and 20,508.98
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Solution
The fourth proportional to 79,673.18, 119,509.86 and 20,508.98 is: 30,763.49
Step by Step Solution
- Step 1: Write the proportion equation
79,673.18 : 119,509.86 = 20,508.98 : x - Step 2: Convert to fraction form
79,673.18/119,509.86 = 20,508.98/x - Step 3: Cross multiply
79,673.18x = 119,509.86 × 20,508.98 - Step 4: Simplify right side
79,673.18x = 2,451,025,328.54 - Step 5: Solve for x
x = 2,451,025,328.54/79,673.18 - Step 6: Final answer
x = 30,763.49
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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.