Finding the Fourth Proportional to 74,122.28, 102,288.81 and 40,130.79
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Solution
The fourth proportional to 74,122.28, 102,288.81 and 40,130.79 is: 55,380.52
Step by Step Solution
- Step 1: Write the proportion equation
74,122.28 : 102,288.81 = 40,130.79 : x - Step 2: Convert to fraction form
74,122.28/102,288.81 = 40,130.79/x - Step 3: Cross multiply
74,122.28x = 102,288.81 × 40,130.79 - Step 4: Simplify right side
74,122.28x = 4,104,930,753.46 - Step 5: Solve for x
x = 4,104,930,753.46/74,122.28 - Step 6: Final answer
x = 55,380.52
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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.