Finding the Fourth Proportional to 74,056.81, 102,198.28 and 40,065.18
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Solution
The fourth proportional to 74,056.81, 102,198.28 and 40,065.18 is: 55,289.88
Step by Step Solution
- Step 1: Write the proportion equation
74,056.81 : 102,198.28 = 40,065.18 : x - Step 2: Convert to fraction form
74,056.81/102,198.28 = 40,065.18/x - Step 3: Cross multiply
74,056.81x = 102,198.28 × 40,065.18 - Step 4: Simplify right side
74,056.81x = 4,094,592,483.89 - Step 5: Solve for x
x = 4,094,592,483.89/74,056.81 - Step 6: Final answer
x = 55,289.88
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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.