Finding the Fourth Proportional to 79,672.18, 119,508.36 and 20,507.98
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Solution
The fourth proportional to 79,672.18, 119,508.36 and 20,507.98 is: 30,761.99
Step by Step Solution
- Step 1: Write the proportion equation
79,672.18 : 119,508.36 = 20,507.98 : x - Step 2: Convert to fraction form
79,672.18/119,508.36 = 20,507.98/x - Step 3: Cross multiply
79,672.18x = 119,508.36 × 20,507.98 - Step 4: Simplify right side
79,672.18x = 2,450,875,056.71 - Step 5: Solve for x
x = 2,450,875,056.71/79,672.18 - Step 6: Final answer
x = 30,761.99
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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.