Finding the Fourth Proportional to 76,776.99, 115,137.94 and 29,405.40
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Solution
The fourth proportional to 76,776.99, 115,137.94 and 29,405.40 is: 44,097.55
Step by Step Solution
- Step 1: Write the proportion equation
76,776.99 : 115,137.94 = 29,405.40 : x - Step 2: Convert to fraction form
76,776.99/115,137.94 = 29,405.40/x - Step 3: Cross multiply
76,776.99x = 115,137.94 × 29,405.40 - Step 4: Simplify right side
76,776.99x = 3,385,677,180.88 - Step 5: Solve for x
x = 3,385,677,180.88/76,776.99 - Step 6: Final answer
x = 44,097.55
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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.