Finding the Fourth Proportional to 74,025.12, 102,154.80 and 40,491.12
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Solution
The fourth proportional to 74,025.12, 102,154.80 and 40,491.12 is: 55,877.82
Step by Step Solution
- Step 1: Write the proportion equation
74,025.12 : 102,154.80 = 40,491.12 : x - Step 2: Convert to fraction form
74,025.12/102,154.80 = 40,491.12/x - Step 3: Cross multiply
74,025.12x = 102,154.80 × 40,491.12 - Step 4: Simplify right side
74,025.12x = 4,136,362,265.38 - Step 5: Solve for x
x = 4,136,362,265.38/74,025.12 - Step 6: Final answer
x = 55,877.82
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1.5x scale
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.