Finding the Fourth Proportional to 74,629.94, 102,985.88 and 40,638.29
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Solution
The fourth proportional to 74,629.94, 102,985.88 and 40,638.29 is: 56,078.96
Step by Step Solution
- Step 1: Write the proportion equation
74,629.94 : 102,985.88 = 40,638.29 : x - Step 2: Convert to fraction form
74,629.94/102,985.88 = 40,638.29/x - Step 3: Cross multiply
74,629.94x = 102,985.88 × 40,638.29 - Step 4: Simplify right side
74,629.94x = 4,185,169,339.22 - Step 5: Solve for x
x = 4,185,169,339.22/74,629.94 - Step 6: Final answer
x = 56,078.96
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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.