Finding the Fourth Proportional to 86,764.30, 129,911.66 and 56,703.65
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Solution
The fourth proportional to 86,764.30, 129,911.66 and 56,703.65 is: 84,902.03
Step by Step Solution
- Step 1: Write the proportion equation
86,764.30 : 129,911.66 = 56,703.65 : x - Step 2: Convert to fraction form
86,764.30/129,911.66 = 56,703.65/x - Step 3: Cross multiply
86,764.30x = 129,911.66 × 56,703.65 - Step 4: Simplify right side
86,764.30x = 7,366,464,898.08 - Step 5: Solve for x
x = 7,366,464,898.08/86,764.30 - Step 6: Final answer
x = 84,902.03
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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.