Finding the Fourth Proportional to 73.86, 101.80 and 53.09
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Solution
The fourth proportional to 73.86, 101.80 and 53.09 is: 73.17
Step by Step Solution
- Step 1: Write the proportion equation
73.86 : 101.80 = 53.09 : x - Step 2: Convert to fraction form
73.86/101.80 = 53.09/x - Step 3: Cross multiply
73.86x = 101.80 × 53.09 - Step 4: Simplify right side
73.86x = 5,404.56 - Step 5: Solve for x
x = 5,404.56/73.86 - Step 6: Final answer
x = 73.17
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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.