Finding the Fourth Proportional to 112,869.60, 155,761.80 and 61,886.98
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Solution
The fourth proportional to 112,869.60, 155,761.80 and 61,886.98 is: 85,404.99
Step by Step Solution
- Step 1: Write the proportion equation
112,869.60 : 155,761.80 = 61,886.98 : x - Step 2: Convert to fraction form
112,869.60/155,761.80 = 61,886.98/x - Step 3: Cross multiply
112,869.60x = 155,761.80 × 61,886.98 - Step 4: Simplify right side
112,869.60x = 9,639,627,401.36 - Step 5: Solve for x
x = 9,639,627,401.36/112,869.60 - Step 6: Final answer
x = 85,404.99
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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.