Finding the Fourth Proportional to 91,219.36, 125,848.08 and 55,395.84
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Solution
The fourth proportional to 91,219.36, 125,848.08 and 55,395.84 is: 76,425.22
Step by Step Solution
- Step 1: Write the proportion equation
91,219.36 : 125,848.08 = 55,395.84 : x - Step 2: Convert to fraction form
91,219.36/125,848.08 = 55,395.84/x - Step 3: Cross multiply
91,219.36x = 125,848.08 × 55,395.84 - Step 4: Simplify right side
91,219.36x = 6,971,460,103.99 - Step 5: Solve for x
x = 6,971,460,103.99/91,219.36 - Step 6: Final answer
x = 76,425.22
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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.