Finding the Fourth Proportional to 85,835,325.80, 128,752,988.70 and 58,625,546.60
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Solution
The fourth proportional to 85,835,325.80, 128,752,988.70 and 58,625,546.60 is: 87,938,319.90
Step by Step Solution
- Step 1: Write the proportion equation
85,835,325.80 : 128,752,988.70 = 58,625,546.60 : x - Step 2: Convert to fraction form
85,835,325.80/128,752,988.70 = 58,625,546.60/x - Step 3: Cross multiply
85,835,325.80x = 128,752,988.70 × 58,625,546.60 - Step 4: Simplify right side
85,835,325.80x = 7,548,214,338,921,124 - Step 5: Solve for x
x = 7,548,214,338,921,124/85,835,325.80 - Step 6: Final answer
x = 87,938,319.90
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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.