Finding the Fourth Proportional to 74,297.28, 102,529.68 and 40,305.84
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Solution
The fourth proportional to 74,297.28, 102,529.68 and 40,305.84 is: 55,621.75
Step by Step Solution
- Step 1: Write the proportion equation
74,297.28 : 102,529.68 = 40,305.84 : x - Step 2: Convert to fraction form
74,297.28/102,529.68 = 40,305.84/x - Step 3: Cross multiply
74,297.28x = 102,529.68 × 40,305.84 - Step 4: Simplify right side
74,297.28x = 4,132,544,877.33 - Step 5: Solve for x
x = 4,132,544,877.33/74,297.28 - Step 6: Final answer
x = 55,621.75
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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.