Finding the Fourth Proportional to 74,762.40, 103,173.36 and 40,771.08
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Solution
The fourth proportional to 74,762.40, 103,173.36 and 40,771.08 is: 56,264.77
Step by Step Solution
- Step 1: Write the proportion equation
74,762.40 : 103,173.36 = 40,771.08 : x - Step 2: Convert to fraction form
74,762.40/103,173.36 = 40,771.08/x - Step 3: Cross multiply
74,762.40x = 103,173.36 × 40,771.08 - Step 4: Simplify right side
74,762.40x = 4,206,489,314.43 - Step 5: Solve for x
x = 4,206,489,314.43/74,762.40 - Step 6: Final answer
x = 56,264.77
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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.