Finding the Fourth Proportional to 74,422.84, 102,703.65 and 40,431.46
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Solution
The fourth proportional to 74,422.84, 102,703.65 and 40,431.46 is: 55,795.49
Step by Step Solution
- Step 1: Write the proportion equation
74,422.84 : 102,703.65 = 40,431.46 : x - Step 2: Convert to fraction form
74,422.84/102,703.65 = 40,431.46/x - Step 3: Cross multiply
74,422.84x = 102,703.65 × 40,431.46 - Step 4: Simplify right side
74,422.84x = 4,152,458,516.83 - Step 5: Solve for x
x = 4,152,458,516.83/74,422.84 - Step 6: Final answer
x = 55,795.49
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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.