Finding the Fourth Proportional to 79,875.20, 119,812.80 and 24,471.20
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Solution
The fourth proportional to 79,875.20, 119,812.80 and 24,471.20 is: 36,706.80
Step by Step Solution
- Step 1: Write the proportion equation
79,875.20 : 119,812.80 = 24,471.20 : x - Step 2: Convert to fraction form
79,875.20/119,812.80 = 24,471.20/x - Step 3: Cross multiply
79,875.20x = 119,812.80 × 24,471.20 - Step 4: Simplify right side
79,875.20x = 2,931,962,991.36 - Step 5: Solve for x
x = 2,931,962,991.36/79,875.20 - Step 6: Final answer
x = 36,706.80
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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.