Finding the Fourth Proportional to 63,131,616.36, 87,112,289.70 and 38,338,909.80
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Solution
The fourth proportional to 63,131,616.36, 87,112,289.70 and 38,338,909.80 is: 52,902,022.95
Step by Step Solution
- Step 1: Write the proportion equation
63,131,616.36 : 87,112,289.70 = 38,338,909.80 : x - Step 2: Convert to fraction form
63,131,616.36/87,112,289.70 = 38,338,909.80/x - Step 3: Cross multiply
63,131,616.36x = 87,112,289.70 × 38,338,909.80 - Step 4: Simplify right side
63,131,616.36x = 3,339,790,217,279,769 - Step 5: Solve for x
x = 3,339,790,217,279,769/63,131,616.36 - Step 6: Final answer
x = 52,902,022.95
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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.