Finding the Fourth Proportional to 97,891.20, 135,089.64 and 55,449.63
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Solution
The fourth proportional to 97,891.20, 135,089.64 and 55,449.63 is: 76,520.37
Step by Step Solution
- Step 1: Write the proportion equation
97,891.20 : 135,089.64 = 55,449.63 : x - Step 2: Convert to fraction form
97,891.20/135,089.64 = 55,449.63/x - Step 3: Cross multiply
97,891.20x = 135,089.64 × 55,449.63 - Step 4: Simplify right side
97,891.20x = 7,490,670,554.83 - Step 5: Solve for x
x = 7,490,670,554.83/97,891.20 - Step 6: Final answer
x = 76,520.37
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1.5x scale
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.