Finding the Fourth Proportional to 90,117.35, 135,069.91 and 36,776.05
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Solution
The fourth proportional to 90,117.35, 135,069.91 and 36,776.05 is: 55,120.77
Step by Step Solution
- Step 1: Write the proportion equation
90,117.35 : 135,069.91 = 36,776.05 : x - Step 2: Convert to fraction form
90,117.35/135,069.91 = 36,776.05/x - Step 3: Cross multiply
90,117.35x = 135,069.91 × 36,776.05 - Step 4: Simplify right side
90,117.35x = 4,967,337,763.66 - Step 5: Solve for x
x = 4,967,337,763.66/90,117.35 - Step 6: Final answer
x = 55,120.77
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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.