Finding the Fourth Proportional to 101,276.80, 139,765.44 and 63,571.84
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Solution
The fourth proportional to 101,276.80, 139,765.44 and 63,571.84 is: 87,731.31
Step by Step Solution
- Step 1: Write the proportion equation
101,276.80 : 139,765.44 = 63,571.84 : x - Step 2: Convert to fraction form
101,276.80/139,765.44 = 63,571.84/x - Step 3: Cross multiply
101,276.80x = 139,765.44 × 63,571.84 - Step 4: Simplify right side
101,276.80x = 8,885,146,189.21 - Step 5: Solve for x
x = 8,885,146,189.21/101,276.80 - Step 6: Final answer
x = 87,731.31
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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.