Finding the Fourth Proportional to 99,844,991.20, 149,767,486.80 and 48,759,781.60
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Solution
The fourth proportional to 99,844,991.20, 149,767,486.80 and 48,759,781.60 is: 73,139,672.40
Step by Step Solution
- Step 1: Write the proportion equation
99,844,991.20 : 149,767,486.80 = 48,759,781.60 : x - Step 2: Convert to fraction form
99,844,991.20/149,767,486.80 = 48,759,781.60/x - Step 3: Cross multiply
99,844,991.20x = 149,767,486.80 × 48,759,781.60 - Step 4: Simplify right side
99,844,991.20x = 7,302,629,947,148,884 - Step 5: Solve for x
x = 7,302,629,947,148,884/99,844,991.20 - Step 6: Final answer
x = 73,139,672.40
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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.