Finding the Fourth Proportional to 74,872.74, 103,324.61 and 40,881.53
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Solution
The fourth proportional to 74,872.74, 103,324.61 and 40,881.53 is: 56,416.63
Step by Step Solution
- Step 1: Write the proportion equation
74,872.74 : 103,324.61 = 40,881.53 : x - Step 2: Convert to fraction form
74,872.74/103,324.61 = 40,881.53/x - Step 3: Cross multiply
74,872.74x = 103,324.61 × 40,881.53 - Step 4: Simplify right side
74,872.74x = 4,224,067,422.42 - Step 5: Solve for x
x = 4,224,067,422.42/74,872.74 - Step 6: Final answer
x = 56,416.63
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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.