Finding the Fourth Proportional to 74,539.39, 111,860.93 and 48,178.75
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Solution
The fourth proportional to 74,539.39, 111,860.93 and 48,178.75 is: 72,301.64
Step by Step Solution
- Step 1: Write the proportion equation
74,539.39 : 111,860.93 = 48,178.75 : x - Step 2: Convert to fraction form
74,539.39/111,860.93 = 48,178.75/x - Step 3: Cross multiply
74,539.39x = 111,860.93 × 48,178.75 - Step 4: Simplify right side
74,539.39x = 5,389,319,781.24 - Step 5: Solve for x
x = 5,389,319,781.24/74,539.39 - Step 6: Final answer
x = 72,301.64
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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.