Finding the Fourth Proportional to 74,817.28, 103,285.20 and 46,532.08
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Solution
The fourth proportional to 74,817.28, 103,285.20 and 46,532.08 is: 64,237.50
Step by Step Solution
- Step 1: Write the proportion equation
74,817.28 : 103,285.20 = 46,532.08 : x - Step 2: Convert to fraction form
74,817.28/103,285.20 = 46,532.08/x - Step 3: Cross multiply
74,817.28x = 103,285.20 × 46,532.08 - Step 4: Simplify right side
74,817.28x = 4,806,075,189.22 - Step 5: Solve for x
x = 4,806,075,189.22/74,817.28 - Step 6: Final answer
x = 64,237.50
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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.