Finding the Fourth Proportional to 73,315.75, 101,175.74 and 39,781.75
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Solution
The fourth proportional to 73,315.75, 101,175.74 and 39,781.75 is: 54,898.82
Step by Step Solution
- Step 1: Write the proportion equation
73,315.75 : 101,175.74 = 39,781.75 : x - Step 2: Convert to fraction form
73,315.75/101,175.74 = 39,781.75/x - Step 3: Cross multiply
73,315.75x = 101,175.74 × 39,781.75 - Step 4: Simplify right side
73,315.75x = 4,024,947,795.84 - Step 5: Solve for x
x = 4,024,947,795.84/73,315.75 - Step 6: Final answer
x = 54,898.82
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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.