Finding the Fourth Proportional to 83,974,538.70, 125,961,808.05 and 69,625,631.70
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Solution
The fourth proportional to 83,974,538.70, 125,961,808.05 and 69,625,631.70 is: 104,438,447.55
Step by Step Solution
- Step 1: Write the proportion equation
83,974,538.70 : 125,961,808.05 = 69,625,631.70 : x - Step 2: Convert to fraction form
83,974,538.70/125,961,808.05 = 69,625,631.70/x - Step 3: Cross multiply
83,974,538.70x = 125,961,808.05 × 69,625,631.70 - Step 4: Simplify right side
83,974,538.70x = 8,770,170,455,555,395 - Step 5: Solve for x
x = 8,770,170,455,555,395/83,974,538.70 - Step 6: Final answer
x = 104,438,447.55
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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.