Finding the Fourth Proportional to 71,616.28, 107,415.96 and 19,029.80
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Solution
The fourth proportional to 71,616.28, 107,415.96 and 19,029.80 is: 28,542.45
Step by Step Solution
- Step 1: Write the proportion equation
71,616.28 : 107,415.96 = 19,029.80 : x - Step 2: Convert to fraction form
71,616.28/107,415.96 = 19,029.80/x - Step 3: Cross multiply
71,616.28x = 107,415.96 × 19,029.80 - Step 4: Simplify right side
71,616.28x = 2,044,104,235.61 - Step 5: Solve for x
x = 2,044,104,235.61/71,616.28 - Step 6: Final answer
x = 28,542.45
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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.