Finding the Fourth Proportional to 81,856,579.20, 122,801,927.40 and 27,286,117.80
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Solution
The fourth proportional to 81,856,579.20, 122,801,927.40 and 27,286,117.80 is: 40,934,863.02
Step by Step Solution
- Step 1: Write the proportion equation
81,856,579.20 : 122,801,927.40 = 27,286,117.80 : x - Step 2: Convert to fraction form
81,856,579.20/122,801,927.40 = 27,286,117.80/x - Step 3: Cross multiply
81,856,579.20x = 122,801,927.40 × 27,286,117.80 - Step 4: Simplify right side
81,856,579.20x = 3,350,787,857,103,448 - Step 5: Solve for x
x = 3,350,787,857,103,448/81,856,579.20 - Step 6: Final answer
x = 40,934,863.02
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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.