Finding the Fourth Proportional to 68,987.80, 103,400.70 and 68,249.08
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Solution
The fourth proportional to 68,987.80, 103,400.70 and 68,249.08 is: 102,293.49
Step by Step Solution
- Step 1: Write the proportion equation
68,987.80 : 103,400.70 = 68,249.08 : x - Step 2: Convert to fraction form
68,987.80/103,400.70 = 68,249.08/x - Step 3: Cross multiply
68,987.80x = 103,400.70 × 68,249.08 - Step 4: Simplify right side
68,987.80x = 7,057,002,646.36 - Step 5: Solve for x
x = 7,057,002,646.36/68,987.80 - Step 6: Final answer
x = 102,293.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.