Finding the Fourth Proportional to 90,291.12, 135,564.12 and 56,902.92
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Solution
The fourth proportional to 90,291.12, 135,564.12 and 56,902.92 is: 85,434.69
Step by Step Solution
- Step 1: Write the proportion equation
90,291.12 : 135,564.12 = 56,902.92 : x - Step 2: Convert to fraction form
90,291.12/135,564.12 = 56,902.92/x - Step 3: Cross multiply
90,291.12x = 135,564.12 × 56,902.92 - Step 4: Simplify right side
90,291.12x = 7,713,994,275.23 - Step 5: Solve for x
x = 7,713,994,275.23/90,291.12 - Step 6: Final answer
x = 85,434.69
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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.