Finding the Fourth Proportional to 74,750.60, 103,156.64 and 40,758.81
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Solution
The fourth proportional to 74,750.60, 103,156.64 and 40,758.81 is: 56,247.60
Step by Step Solution
- Step 1: Write the proportion equation
74,750.60 : 103,156.64 = 40,758.81 : x - Step 2: Convert to fraction form
74,750.60/103,156.64 = 40,758.81/x - Step 3: Cross multiply
74,750.60x = 103,156.64 × 40,758.81 - Step 4: Simplify right side
74,750.60x = 4,204,541,686.20 - Step 5: Solve for x
x = 4,204,541,686.20/74,750.60 - Step 6: Final answer
x = 56,247.60
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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.