Finding the Fourth Proportional to 90,643.36, 125,073.48 and 52,388.68
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Solution
The fourth proportional to 90,643.36, 125,073.48 and 52,388.68 is: 72,288.08
Step by Step Solution
- Step 1: Write the proportion equation
90,643.36 : 125,073.48 = 52,388.68 : x - Step 2: Convert to fraction form
90,643.36/125,073.48 = 52,388.68/x - Step 3: Cross multiply
90,643.36x = 125,073.48 × 52,388.68 - Step 4: Simplify right side
90,643.36x = 6,552,434,520.21 - Step 5: Solve for x
x = 6,552,434,520.21/90,643.36 - Step 6: Final answer
x = 72,288.08
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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.