Finding the Fourth Proportional to 74,405.94, 102,682.01 and 42,585.09
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Solution
The fourth proportional to 74,405.94, 102,682.01 and 42,585.09 is: 58,768.46
Step by Step Solution
- Step 1: Write the proportion equation
74,405.94 : 102,682.01 = 42,585.09 : x - Step 2: Convert to fraction form
74,405.94/102,682.01 = 42,585.09/x - Step 3: Cross multiply
74,405.94x = 102,682.01 × 42,585.09 - Step 4: Simplify right side
74,405.94x = 4,372,722,424.31 - Step 5: Solve for x
x = 4,372,722,424.31/74,405.94 - Step 6: Final answer
x = 58,768.46
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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.