Finding the Fourth Proportional to 87,988.68, 121,370.61 and 52,154.70
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Solution
The fourth proportional to 87,988.68, 121,370.61 and 52,154.70 is: 71,941.62
Step by Step Solution
- Step 1: Write the proportion equation
87,988.68 : 121,370.61 = 52,154.70 : x - Step 2: Convert to fraction form
87,988.68/121,370.61 = 52,154.70/x - Step 3: Cross multiply
87,988.68x = 121,370.61 × 52,154.70 - Step 4: Simplify right side
87,988.68x = 6,330,047,753.37 - Step 5: Solve for x
x = 6,330,047,753.37/87,988.68 - Step 6: Final answer
x = 71,941.62
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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.