Finding the Fourth Proportional to 39,318,129.10, 54,259,270.05 and 21,915,577.81
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Solution
The fourth proportional to 39,318,129.10, 54,259,270.05 and 21,915,577.81 is: 30,243,637.78
Step by Step Solution
- Step 1: Write the proportion equation
39,318,129.10 : 54,259,270.05 = 21,915,577.81 : x - Step 2: Convert to fraction form
39,318,129.10/54,259,270.05 = 21,915,577.81/x - Step 3: Cross multiply
39,318,129.10x = 54,259,270.05 × 21,915,577.81 - Step 4: Simplify right side
39,318,129.10x = 1,189,123,254,694,577.50 - Step 5: Solve for x
x = 1,189,123,254,694,577.50/39,318,129.10 - Step 6: Final answer
x = 30,243,637.78
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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.