Finding the Fourth Proportional to 73,991.12, 102,107.64 and 40,457.12
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Solution
The fourth proportional to 73,991.12, 102,107.64 and 40,457.12 is: 55,830.77
Step by Step Solution
- Step 1: Write the proportion equation
73,991.12 : 102,107.64 = 40,457.12 : x - Step 2: Convert to fraction form
73,991.12/102,107.64 = 40,457.12/x - Step 3: Cross multiply
73,991.12x = 102,107.64 × 40,457.12 - Step 4: Simplify right side
73,991.12x = 4,130,981,044.40 - Step 5: Solve for x
x = 4,130,981,044.40/73,991.12 - Step 6: Final answer
x = 55,830.77
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.