Finding the Fourth Proportional to 79,089.98, 109,144.16 and 43,279.99
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Solution
The fourth proportional to 79,089.98, 109,144.16 and 43,279.99 is: 59,726.38
Step by Step Solution
- Step 1: Write the proportion equation
79,089.98 : 109,144.16 = 43,279.99 : x - Step 2: Convert to fraction form
79,089.98/109,144.16 = 43,279.99/x - Step 3: Cross multiply
79,089.98x = 109,144.16 × 43,279.99 - Step 4: Simplify right side
79,089.98x = 4,723,758,153.36 - Step 5: Solve for x
x = 4,723,758,153.36/79,089.98 - Step 6: Final answer
x = 59,726.38
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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.