Finding the Fourth Proportional to 87,423,011.12, 120,698,201.93 and 55,651,107.57
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Solution
The fourth proportional to 87,423,011.12, 120,698,201.93 and 55,651,107.57 is: 76,833,187.66
Step by Step Solution
- Step 1: Write the proportion equation
87,423,011.12 : 120,698,201.93 = 55,651,107.57 : x - Step 2: Convert to fraction form
87,423,011.12/120,698,201.93 = 55,651,107.57/x - Step 3: Cross multiply
87,423,011.12x = 120,698,201.93 × 55,651,107.57 - Step 4: Simplify right side
87,423,011.12x = 6,716,988,618,833,756 - Step 5: Solve for x
x = 6,716,988,618,833,756/87,423,011.12 - Step 6: Final answer
x = 76,833,187.66
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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.