Finding the Fourth Proportional to 76,715.80, 115,005.30 and 29,957.80
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Solution
The fourth proportional to 76,715.80, 115,005.30 and 29,957.80 is: 44,909.99
Step by Step Solution
- Step 1: Write the proportion equation
76,715.80 : 115,005.30 = 29,957.80 : x - Step 2: Convert to fraction form
76,715.80/115,005.30 = 29,957.80/x - Step 3: Cross multiply
76,715.80x = 115,005.30 × 29,957.80 - Step 4: Simplify right side
76,715.80x = 3,445,305,776.34 - Step 5: Solve for x
x = 3,445,305,776.34/76,715.80 - Step 6: Final answer
x = 44,909.99
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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.