Finding the Fourth Proportional to 98,008.47, 135,327.87 and 75,311.70
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Solution
The fourth proportional to 98,008.47, 135,327.87 and 75,311.70 is: 103,988.69
Step by Step Solution
- Step 1: Write the proportion equation
98,008.47 : 135,327.87 = 75,311.70 : x - Step 2: Convert to fraction form
98,008.47/135,327.87 = 75,311.70/x - Step 3: Cross multiply
98,008.47x = 135,327.87 × 75,311.70 - Step 4: Simplify right side
98,008.47x = 10,191,771,947.08 - Step 5: Solve for x
x = 10,191,771,947.08/98,008.47 - Step 6: Final answer
x = 103,988.69
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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.