Finding the Fourth Proportional to 74,487.12, 111,695.52 and 27,069.18
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Solution
The fourth proportional to 74,487.12, 111,695.52 and 27,069.18 is: 40,590.99
Step by Step Solution
- Step 1: Write the proportion equation
74,487.12 : 111,695.52 = 27,069.18 : x - Step 2: Convert to fraction form
74,487.12/111,695.52 = 27,069.18/x - Step 3: Cross multiply
74,487.12x = 111,695.52 × 27,069.18 - Step 4: Simplify right side
74,487.12x = 3,023,506,136.07 - Step 5: Solve for x
x = 3,023,506,136.07/74,487.12 - Step 6: Final answer
x = 40,590.99
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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.