Finding the Fourth Proportional to 85,987,420.45, 128,853,584.73 and 63,156,715.09
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Solution
The fourth proportional to 85,987,420.45, 128,853,584.73 and 63,156,715.09 is: 94,641,391.69
Step by Step Solution
- Step 1: Write the proportion equation
85,987,420.45 : 128,853,584.73 = 63,156,715.09 : x - Step 2: Convert to fraction form
85,987,420.45/128,853,584.73 = 63,156,715.09/x - Step 3: Cross multiply
85,987,420.45x = 128,853,584.73 × 63,156,715.09 - Step 4: Simplify right side
85,987,420.45x = 8,137,969,138,795,651 - Step 5: Solve for x
x = 8,137,969,138,795,651/85,987,420.45 - Step 6: Final answer
x = 94,641,391.69
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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.