Finding the Fourth Proportional to 74,393.12, 102,664.08 and 40,858.88
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Solution
The fourth proportional to 74,393.12, 102,664.08 and 40,858.88 is: 56,386.12
Step by Step Solution
- Step 1: Write the proportion equation
74,393.12 : 102,664.08 = 40,858.88 : x - Step 2: Convert to fraction form
74,393.12/102,664.08 = 40,858.88/x - Step 3: Cross multiply
74,393.12x = 102,664.08 × 40,858.88 - Step 4: Simplify right side
74,393.12x = 4,194,739,325.03 - Step 5: Solve for x
x = 4,194,739,325.03/74,393.12 - Step 6: Final answer
x = 56,386.12
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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.