Finding the Fourth Proportional to 39,318,135.60, 54,259,279.02 and 21,915,584.31
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Solution
The fourth proportional to 39,318,135.60, 54,259,279.02 and 21,915,584.31 is: 30,243,646.75
Step by Step Solution
- Step 1: Write the proportion equation
39,318,135.60 : 54,259,279.02 = 21,915,584.31 : x - Step 2: Convert to fraction form
39,318,135.60/54,259,279.02 = 21,915,584.31/x - Step 3: Cross multiply
39,318,135.60x = 54,259,279.02 × 21,915,584.31 - Step 4: Simplify right side
39,318,135.60x = 1,189,123,803,962,624.25 - Step 5: Solve for x
x = 1,189,123,803,962,624.25/39,318,135.60 - Step 6: Final answer
x = 30,243,646.75
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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.