Finding the Fourth Proportional to 89,469.51, 123,418.65 and 56,703.99
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Solution
The fourth proportional to 89,469.51, 123,418.65 and 56,703.99 is: 78,220.28
Step by Step Solution
- Step 1: Write the proportion equation
89,469.51 : 123,418.65 = 56,703.99 : x - Step 2: Convert to fraction form
89,469.51/123,418.65 = 56,703.99/x - Step 3: Cross multiply
89,469.51x = 123,418.65 × 56,703.99 - Step 4: Simplify right side
89,469.51x = 6,998,329,895.41 - Step 5: Solve for x
x = 6,998,329,895.41/89,469.51 - Step 6: Final answer
x = 78,220.28
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1.5x scale
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.