Finding the Fourth Proportional to 72,817.08, 109,224.99 and 20,226.48
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Solution
The fourth proportional to 72,817.08, 109,224.99 and 20,226.48 is: 30,339.55
Step by Step Solution
- Step 1: Write the proportion equation
72,817.08 : 109,224.99 = 20,226.48 : x - Step 2: Convert to fraction form
72,817.08/109,224.99 = 20,226.48/x - Step 3: Cross multiply
72,817.08x = 109,224.99 × 20,226.48 - Step 4: Simplify right side
72,817.08x = 2,209,237,075.74 - Step 5: Solve for x
x = 2,209,237,075.74/72,817.08 - Step 6: Final answer
x = 30,339.55
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1.5x scale
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.