Finding the Fourth Proportional to 76,767.35, 105,924.92 and 42,774.99
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Solution
The fourth proportional to 76,767.35, 105,924.92 and 42,774.99 is: 59,021.67
Step by Step Solution
- Step 1: Write the proportion equation
76,767.35 : 105,924.92 = 42,774.99 : x - Step 2: Convert to fraction form
76,767.35/105,924.92 = 42,774.99/x - Step 3: Cross multiply
76,767.35x = 105,924.92 × 42,774.99 - Step 4: Simplify right side
76,767.35x = 4,530,936,782.66 - Step 5: Solve for x
x = 4,530,936,782.66/76,767.35 - Step 6: Final answer
x = 59,021.67
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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.