Finding the Fourth Proportional to 99,083.94, 136,738.20 and 56,646.42
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Solution
The fourth proportional to 99,083.94, 136,738.20 and 56,646.42 is: 78,173.41
Step by Step Solution
- Step 1: Write the proportion equation
99,083.94 : 136,738.20 = 56,646.42 : x - Step 2: Convert to fraction form
99,083.94/136,738.20 = 56,646.42/x - Step 3: Cross multiply
99,083.94x = 136,738.20 × 56,646.42 - Step 4: Simplify right side
99,083.94x = 7,745,729,507.24 - Step 5: Solve for x
x = 7,745,729,507.24/99,083.94 - Step 6: Final answer
x = 78,173.41
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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.