Finding the Fourth Proportional to 74,977.30, 103,471.46 and 40,988.05
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Solution
The fourth proportional to 74,977.30, 103,471.46 and 40,988.05 is: 56,565.03
Step by Step Solution
- Step 1: Write the proportion equation
74,977.30 : 103,471.46 = 40,988.05 : x - Step 2: Convert to fraction form
74,977.30/103,471.46 = 40,988.05/x - Step 3: Cross multiply
74,977.30x = 103,471.46 × 40,988.05 - Step 4: Simplify right side
74,977.30x = 4,241,093,376.05 - Step 5: Solve for x
x = 4,241,093,376.05/74,977.30 - Step 6: Final answer
x = 56,565.03
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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.