Finding the Fourth Proportional to 74,374.13, 102,636.23 and 40,840.13
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Solution
The fourth proportional to 74,374.13, 102,636.23 and 40,840.13 is: 56,359.34
Step by Step Solution
- Step 1: Write the proportion equation
74,374.13 : 102,636.23 = 40,840.13 : x - Step 2: Convert to fraction form
74,374.13/102,636.23 = 40,840.13/x - Step 3: Cross multiply
74,374.13x = 102,636.23 × 40,840.13 - Step 4: Simplify right side
74,374.13x = 4,191,676,975.91 - Step 5: Solve for x
x = 4,191,676,975.91/74,374.13 - Step 6: Final answer
x = 56,359.34
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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.