Finding the Fourth Proportional to 79,638.57, 119,457.73 and 54,602.72
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Solution
The fourth proportional to 79,638.57, 119,457.73 and 54,602.72 is: 81,903.99
Step by Step Solution
- Step 1: Write the proportion equation
79,638.57 : 119,457.73 = 54,602.72 : x - Step 2: Convert to fraction form
79,638.57/119,457.73 = 54,602.72/x - Step 3: Cross multiply
79,638.57x = 119,457.73 × 54,602.72 - Step 4: Simplify right side
79,638.57x = 6,522,716,983.03 - Step 5: Solve for x
x = 6,522,716,983.03/79,638.57 - Step 6: Final answer
x = 81,903.99
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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.