Finding the Fourth Proportional to 74,118.16, 102,283.10 and 40,126.65
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Solution
The fourth proportional to 74,118.16, 102,283.10 and 40,126.65 is: 55,374.80
Step by Step Solution
- Step 1: Write the proportion equation
74,118.16 : 102,283.10 = 40,126.65 : x - Step 2: Convert to fraction form
74,118.16/102,283.10 = 40,126.65/x - Step 3: Cross multiply
74,118.16x = 102,283.10 × 40,126.65 - Step 4: Simplify right side
74,118.16x = 4,104,278,488.02 - Step 5: Solve for x
x = 4,104,278,488.02/74,118.16 - Step 6: Final answer
x = 55,374.80
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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.