Finding the Fourth Proportional to 81,178.80, 121,768.42 and 25,017.09
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Solution
The fourth proportional to 81,178.80, 121,768.42 and 25,017.09 is: 37,525.70
Step by Step Solution
- Step 1: Write the proportion equation
81,178.80 : 121,768.42 = 25,017.09 : x - Step 2: Convert to fraction form
81,178.80/121,768.42 = 25,017.09/x - Step 3: Cross multiply
81,178.80x = 121,768.42 × 25,017.09 - Step 4: Simplify right side
81,178.80x = 3,046,291,522.30 - Step 5: Solve for x
x = 3,046,291,522.30/81,178.80 - Step 6: Final answer
x = 37,525.70
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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.