Finding the Fourth Proportional to 74,311.13, 102,471.19 and 57,318.14
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Solution
The fourth proportional to 74,311.13, 102,471.19 and 57,318.14 is: 79,038.74
Step by Step Solution
- Step 1: Write the proportion equation
74,311.13 : 102,471.19 = 57,318.14 : x - Step 2: Convert to fraction form
74,311.13/102,471.19 = 57,318.14/x - Step 3: Cross multiply
74,311.13x = 102,471.19 × 57,318.14 - Step 4: Simplify right side
74,311.13x = 5,873,457,358.74 - Step 5: Solve for x
x = 5,873,457,358.74/74,311.13 - Step 6: Final answer
x = 79,038.74
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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.