Finding the Fourth Proportional to 74,340.10, 102,589.64 and 40,348.63
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Solution
The fourth proportional to 74,340.10, 102,589.64 and 40,348.63 is: 55,681.28
Step by Step Solution
- Step 1: Write the proportion equation
74,340.10 : 102,589.64 = 40,348.63 : x - Step 2: Convert to fraction form
74,340.10/102,589.64 = 40,348.63/x - Step 3: Cross multiply
74,340.10x = 102,589.64 × 40,348.63 - Step 4: Simplify right side
74,340.10x = 4,139,352,019.49 - Step 5: Solve for x
x = 4,139,352,019.49/74,340.10 - Step 6: Final answer
x = 55,681.28
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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.