Finding the Fourth Proportional to 90,207.23, 135,435.99 and 56,828.75
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Solution
The fourth proportional to 90,207.23, 135,435.99 and 56,828.75 is: 85,321.96
Step by Step Solution
- Step 1: Write the proportion equation
90,207.23 : 135,435.99 = 56,828.75 : x - Step 2: Convert to fraction form
90,207.23/135,435.99 = 56,828.75/x - Step 3: Cross multiply
90,207.23x = 135,435.99 × 56,828.75 - Step 4: Simplify right side
90,207.23x = 7,696,658,016.71 - Step 5: Solve for x
x = 7,696,658,016.71/90,207.23 - Step 6: Final answer
x = 85,321.96
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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.