Finding the Fourth Proportional to 75,782.40, 104,574.72 and 42,247.68
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Solution
The fourth proportional to 75,782.40, 104,574.72 and 42,247.68 is: 58,299.02
Step by Step Solution
- Step 1: Write the proportion equation
75,782.40 : 104,574.72 = 42,247.68 : x - Step 2: Convert to fraction form
75,782.40/104,574.72 = 42,247.68/x - Step 3: Cross multiply
75,782.40x = 104,574.72 × 42,247.68 - Step 4: Simplify right side
75,782.40x = 4,418,039,306.65 - Step 5: Solve for x
x = 4,418,039,306.65/75,782.40 - Step 6: Final answer
x = 58,299.02
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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.