Finding the Fourth Proportional to 75,021.80, 112,532.70 and 19,617.80
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Solution
The fourth proportional to 75,021.80, 112,532.70 and 19,617.80 is: 29,426.70
Step by Step Solution
- Step 1: Write the proportion equation
75,021.80 : 112,532.70 = 19,617.80 : x - Step 2: Convert to fraction form
75,021.80/112,532.70 = 19,617.80/x - Step 3: Cross multiply
75,021.80x = 112,532.70 × 19,617.80 - Step 4: Simplify right side
75,021.80x = 2,207,644,002.06 - Step 5: Solve for x
x = 2,207,644,002.06/75,021.80 - Step 6: Final answer
x = 29,426.70
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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.