Finding the Fourth Proportional to 74,188.34, 102,415.39 and 42,351.09
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Solution
The fourth proportional to 74,188.34, 102,415.39 and 42,351.09 is: 58,464.75
Step by Step Solution
- Step 1: Write the proportion equation
74,188.34 : 102,415.39 = 42,351.09 : x - Step 2: Convert to fraction form
74,188.34/102,415.39 = 42,351.09/x - Step 3: Cross multiply
74,188.34x = 102,415.39 × 42,351.09 - Step 4: Simplify right side
74,188.34x = 4,337,402,909.34 - Step 5: Solve for x
x = 4,337,402,909.34/74,188.34 - Step 6: Final answer
x = 58,464.75
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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.