Finding the Fourth Proportional to 80,400.77, 110,851.09 and 57,457.99
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Solution
The fourth proportional to 80,400.77, 110,851.09 and 57,457.99 is: 79,219.15
Step by Step Solution
- Step 1: Write the proportion equation
80,400.77 : 110,851.09 = 57,457.99 : x - Step 2: Convert to fraction form
80,400.77/110,851.09 = 57,457.99/x - Step 3: Cross multiply
80,400.77x = 110,851.09 × 57,457.99 - Step 4: Simplify right side
80,400.77x = 6,369,280,399.94 - Step 5: Solve for x
x = 6,369,280,399.94/80,400.77 - Step 6: Final answer
x = 79,219.15
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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.