Finding the Fourth Proportional to 74,159.72, 102,339.79 and 40,167.41
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Solution
The fourth proportional to 74,159.72, 102,339.79 and 40,167.41 is: 55,430.68
Step by Step Solution
- Step 1: Write the proportion equation
74,159.72 : 102,339.79 = 40,167.41 : x - Step 2: Convert to fraction form
74,159.72/102,339.79 = 40,167.41/x - Step 3: Cross multiply
74,159.72x = 102,339.79 × 40,167.41 - Step 4: Simplify right side
74,159.72x = 4,110,723,692.13 - Step 5: Solve for x
x = 4,110,723,692.13/74,159.72 - Step 6: Final answer
x = 55,430.68
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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.