Finding the Fourth Proportional to 74,701.80, 112,052.70 and 39,709.80
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Solution
The fourth proportional to 74,701.80, 112,052.70 and 39,709.80 is: 59,564.70
Step by Step Solution
- Step 1: Write the proportion equation
74,701.80 : 112,052.70 = 39,709.80 : x - Step 2: Convert to fraction form
74,701.80/112,052.70 = 39,709.80/x - Step 3: Cross multiply
74,701.80x = 112,052.70 × 39,709.80 - Step 4: Simplify right side
74,701.80x = 4,449,590,306.46 - Step 5: Solve for x
x = 4,449,590,306.46/74,701.80 - Step 6: Final answer
x = 59,564.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.