Finding the Fourth Proportional to 79,371.15, 119,056.74 and 61,854.09
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Solution
The fourth proportional to 79,371.15, 119,056.74 and 61,854.09 is: 92,781.15
Step by Step Solution
- Step 1: Write the proportion equation
79,371.15 : 119,056.74 = 61,854.09 : x - Step 2: Convert to fraction form
79,371.15/119,056.74 = 61,854.09/x - Step 3: Cross multiply
79,371.15x = 119,056.74 × 61,854.09 - Step 4: Simplify right side
79,371.15x = 7,364,146,311.07 - Step 5: Solve for x
x = 7,364,146,311.07/79,371.15 - Step 6: Final answer
x = 92,781.15
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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.