Finding the Fourth Proportional to 74,385.80, 102,652.06 and 40,394.02
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Solution
The fourth proportional to 74,385.80, 102,652.06 and 40,394.02 is: 55,743.56
Step by Step Solution
- Step 1: Write the proportion equation
74,385.80 : 102,652.06 = 40,394.02 : x - Step 2: Convert to fraction form
74,385.80/102,652.06 = 40,394.02/x - Step 3: Cross multiply
74,385.80x = 102,652.06 × 40,394.02 - Step 4: Simplify right side
74,385.80x = 4,146,529,364.68 - Step 5: Solve for x
x = 4,146,529,364.68/74,385.80 - Step 6: Final answer
x = 55,743.56
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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.