Finding the Fourth Proportional to 101,132.75, 139,563.26 and 56,420.75
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Solution
The fourth proportional to 101,132.75, 139,563.26 and 56,420.75 is: 77,860.67
Step by Step Solution
- Step 1: Write the proportion equation
101,132.75 : 139,563.26 = 56,420.75 : x - Step 2: Convert to fraction form
101,132.75/139,563.26 = 56,420.75/x - Step 3: Cross multiply
101,132.75x = 139,563.26 × 56,420.75 - Step 4: Simplify right side
101,132.75x = 7,874,263,801.65 - Step 5: Solve for x
x = 7,874,263,801.65/101,132.75 - Step 6: Final answer
x = 77,860.67
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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.