Finding the Fourth Proportional to 86,473.80, 129,631.62 and 73,231.95
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Solution
The fourth proportional to 86,473.80, 129,631.62 and 73,231.95 is: 109,780.95
Step by Step Solution
- Step 1: Write the proportion equation
86,473.80 : 129,631.62 = 73,231.95 : x - Step 2: Convert to fraction form
86,473.80/129,631.62 = 73,231.95/x - Step 3: Cross multiply
86,473.80x = 129,631.62 × 73,231.95 - Step 4: Simplify right side
86,473.80x = 9,493,176,314.26 - Step 5: Solve for x
x = 9,493,176,314.26/86,473.80 - Step 6: Final answer
x = 109,780.95
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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.