Finding the Fourth Proportional to 74,137.14, 102,309.09 and 40,145.71
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Solution
The fourth proportional to 74,137.14, 102,309.09 and 40,145.71 is: 55,400.99
Step by Step Solution
- Step 1: Write the proportion equation
74,137.14 : 102,309.09 = 40,145.71 : x - Step 2: Convert to fraction form
74,137.14/102,309.09 = 40,145.71/x - Step 3: Cross multiply
74,137.14x = 102,309.09 × 40,145.71 - Step 4: Simplify right side
74,137.14x = 4,107,271,068.83 - Step 5: Solve for x
x = 4,107,271,068.83/74,137.14 - Step 6: Final answer
x = 55,400.99
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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.