Finding the Fourth Proportional to 74,329.80, 102,574.58 and 40,337.40
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Solution
The fourth proportional to 74,329.80, 102,574.58 and 40,337.40 is: 55,665.32
Step by Step Solution
- Step 1: Write the proportion equation
74,329.80 : 102,574.58 = 40,337.40 : x - Step 2: Convert to fraction form
74,329.80/102,574.58 = 40,337.40/x - Step 3: Cross multiply
74,329.80x = 102,574.58 × 40,337.40 - Step 4: Simplify right side
74,329.80x = 4,137,591,863.29 - Step 5: Solve for x
x = 4,137,591,863.29/74,329.80 - Step 6: Final answer
x = 55,665.32
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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.