Finding the Fourth Proportional to 287,672.99, 431,587.85 and 87,988.95
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Solution
The fourth proportional to 287,672.99, 431,587.85 and 87,988.95 is: 132,007.39
Step by Step Solution
- Step 1: Write the proportion equation
287,672.99 : 431,587.85 = 87,988.95 : x - Step 2: Convert to fraction form
287,672.99/431,587.85 = 87,988.95/x - Step 3: Cross multiply
287,672.99x = 431,587.85 × 87,988.95 - Step 4: Simplify right side
287,672.99x = 37,974,961,754.26 - Step 5: Solve for x
x = 37,974,961,754.26/287,672.99 - Step 6: Final answer
x = 132,007.39
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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.