Finding the Fourth Proportional to 84,658.10, 126,875.76 and 47,235.80
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Solution
The fourth proportional to 84,658.10, 126,875.76 and 47,235.80 is: 70,791.55
Step by Step Solution
- Step 1: Write the proportion equation
84,658.10 : 126,875.76 = 47,235.80 : x - Step 2: Convert to fraction form
84,658.10/126,875.76 = 47,235.80/x - Step 3: Cross multiply
84,658.10x = 126,875.76 × 47,235.80 - Step 4: Simplify right side
84,658.10x = 5,993,078,024.21 - Step 5: Solve for x
x = 5,993,078,024.21/84,658.10 - Step 6: Final answer
x = 70,791.55
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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.