Finding the Fourth Proportional to 86,430.63, 129,700.62 and 33,838.75
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Solution
The fourth proportional to 86,430.63, 129,700.62 and 33,838.75 is: 50,779.53
Step by Step Solution
- Step 1: Write the proportion equation
86,430.63 : 129,700.62 = 33,838.75 : x - Step 2: Convert to fraction form
86,430.63/129,700.62 = 33,838.75/x - Step 3: Cross multiply
86,430.63x = 129,700.62 × 33,838.75 - Step 4: Simplify right side
86,430.63x = 4,388,906,855.03 - Step 5: Solve for x
x = 4,388,906,855.03/86,430.63 - Step 6: Final answer
x = 50,779.53
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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.