Finding the Fourth Proportional to 91,782,435.74, 126,668,910.86 and 68,537,206.40
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Solution
The fourth proportional to 91,782,435.74, 126,668,910.86 and 68,537,206.40 is: 94,588,177.11
Step by Step Solution
- Step 1: Write the proportion equation
91,782,435.74 : 126,668,910.86 = 68,537,206.40 : x - Step 2: Convert to fraction form
91,782,435.74/126,668,910.86 = 68,537,206.40/x - Step 3: Cross multiply
91,782,435.74x = 126,668,910.86 × 68,537,206.40 - Step 4: Simplify right side
91,782,435.74x = 8,681,533,287,098,991 - Step 5: Solve for x
x = 8,681,533,287,098,991/91,782,435.74 - Step 6: Final answer
x = 94,588,177.11
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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.