Finding the Fourth Proportional to 91,782,436.24, 126,668,911.55 and 68,537,206.90
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Solution
The fourth proportional to 91,782,436.24, 126,668,911.55 and 68,537,206.90 is: 94,588,177.80
Step by Step Solution
- Step 1: Write the proportion equation
91,782,436.24 : 126,668,911.55 = 68,537,206.90 : x - Step 2: Convert to fraction form
91,782,436.24/126,668,911.55 = 68,537,206.90/x - Step 3: Cross multiply
91,782,436.24x = 126,668,911.55 × 68,537,206.90 - Step 4: Simplify right side
91,782,436.24x = 8,681,533,397,724,119 - Step 5: Solve for x
x = 8,681,533,397,724,119/91,782,436.24 - Step 6: Final answer
x = 94,588,177.80
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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.