Finding the Fourth Proportional to 74,415.16, 102,693.68 and 40,423.96
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Solution
The fourth proportional to 74,415.16, 102,693.68 and 40,423.96 is: 55,785.48
Step by Step Solution
- Step 1: Write the proportion equation
74,415.16 : 102,693.68 = 40,423.96 : x - Step 2: Convert to fraction form
74,415.16/102,693.68 = 40,423.96/x - Step 3: Cross multiply
74,415.16x = 102,693.68 × 40,423.96 - Step 4: Simplify right side
74,415.16x = 4,151,285,212.57 - Step 5: Solve for x
x = 4,151,285,212.57/74,415.16 - Step 6: Final answer
x = 55,785.48
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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.