Finding the Fourth Proportional to 85,669,310.97, 128,394,791.42 and 40,130,722.17
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Solution
The fourth proportional to 85,669,310.97, 128,394,791.42 and 40,130,722.17 is: 60,144,941.57
Step by Step Solution
- Step 1: Write the proportion equation
85,669,310.97 : 128,394,791.42 = 40,130,722.17 : x - Step 2: Convert to fraction form
85,669,310.97/128,394,791.42 = 40,130,722.17/x - Step 3: Cross multiply
85,669,310.97x = 128,394,791.42 × 40,130,722.17 - Step 4: Simplify right side
85,669,310.97x = 5,152,575,702,350,467 - Step 5: Solve for x
x = 5,152,575,702,350,467/85,669,310.97 - Step 6: Final answer
x = 60,144,941.57
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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.