Finding the Fourth Proportional to 74,872.98, 103,323.92 and 40,881.36
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Solution
The fourth proportional to 74,872.98, 103,323.92 and 40,881.36 is: 56,415.84
Step by Step Solution
- Step 1: Write the proportion equation
74,872.98 : 103,323.92 = 40,881.36 : x - Step 2: Convert to fraction form
74,872.98/103,323.92 = 40,881.36/x - Step 3: Cross multiply
74,872.98x = 103,323.92 × 40,881.36 - Step 4: Simplify right side
74,872.98x = 4,224,022,370.13 - Step 5: Solve for x
x = 4,224,022,370.13/74,872.98 - Step 6: Final answer
x = 56,415.84
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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.