Finding the Fourth Proportional to 83,408.40, 125,113.41 and 66,726.99
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Solution
The fourth proportional to 83,408.40, 125,113.41 and 66,726.99 is: 100,091.13
Step by Step Solution
- Step 1: Write the proportion equation
83,408.40 : 125,113.41 = 66,726.99 : x - Step 2: Convert to fraction form
83,408.40/125,113.41 = 66,726.99/x - Step 3: Cross multiply
83,408.40x = 125,113.41 × 66,726.99 - Step 4: Simplify right side
83,408.40x = 8,348,441,257.94 - Step 5: Solve for x
x = 8,348,441,257.94/83,408.40 - Step 6: Final answer
x = 100,091.13
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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.