Finding the Fourth Proportional to 74,768.19, 112,119.50 and 27,988.26
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Solution
The fourth proportional to 74,768.19, 112,119.50 and 27,988.26 is: 41,970.12
Step by Step Solution
- Step 1: Write the proportion equation
74,768.19 : 112,119.50 = 27,988.26 : x - Step 2: Convert to fraction form
74,768.19/112,119.50 = 27,988.26/x - Step 3: Cross multiply
74,768.19x = 112,119.50 × 27,988.26 - Step 4: Simplify right side
74,768.19x = 3,138,029,577.13 - Step 5: Solve for x
x = 3,138,029,577.13/74,768.19 - Step 6: Final answer
x = 41,970.12
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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.