Finding the Fourth Proportional to 99,805.50, 149,709.87 and 28,729.08
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Solution
The fourth proportional to 99,805.50, 149,709.87 and 28,729.08 is: 43,094.09
Step by Step Solution
- Step 1: Write the proportion equation
99,805.50 : 149,709.87 = 28,729.08 : x - Step 2: Convert to fraction form
99,805.50/149,709.87 = 28,729.08/x - Step 3: Cross multiply
99,805.50x = 149,709.87 × 28,729.08 - Step 4: Simplify right side
99,805.50x = 4,301,026,832.02 - Step 5: Solve for x
x = 4,301,026,832.02/99,805.50 - Step 6: Final answer
x = 43,094.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.