Finding the Fourth Proportional to 73,216.75, 101,039.12 and 39,682.75
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Solution
The fourth proportional to 73,216.75, 101,039.12 and 39,682.75 is: 54,762.20
Step by Step Solution
- Step 1: Write the proportion equation
73,216.75 : 101,039.12 = 39,682.75 : x - Step 2: Convert to fraction form
73,216.75/101,039.12 = 39,682.75/x - Step 3: Cross multiply
73,216.75x = 101,039.12 × 39,682.75 - Step 4: Simplify right side
73,216.75x = 4,009,510,139.18 - Step 5: Solve for x
x = 4,009,510,139.18/73,216.75 - Step 6: Final answer
x = 54,762.20
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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.