Finding the Fourth Proportional to 75,178.08, 103,745.83 and 40,722.88
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Solution
The fourth proportional to 75,178.08, 103,745.83 and 40,722.88 is: 56,197.62
Step by Step Solution
- Step 1: Write the proportion equation
75,178.08 : 103,745.83 = 40,722.88 : x - Step 2: Convert to fraction form
75,178.08/103,745.83 = 40,722.88/x - Step 3: Cross multiply
75,178.08x = 103,745.83 × 40,722.88 - Step 4: Simplify right side
75,178.08x = 4,224,828,828.03 - Step 5: Solve for x
x = 4,224,828,828.03/75,178.08 - Step 6: Final answer
x = 56,197.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.