Finding the Fourth Proportional to 74,961.84, 103,443.84 and 40,972.08
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Solution
The fourth proportional to 74,961.84, 103,443.84 and 40,972.08 is: 56,539.56
Step by Step Solution
- Step 1: Write the proportion equation
74,961.84 : 103,443.84 = 40,972.08 : x - Step 2: Convert to fraction form
74,961.84/103,443.84 = 40,972.08/x - Step 3: Cross multiply
74,961.84x = 103,443.84 × 40,972.08 - Step 4: Simplify right side
74,961.84x = 4,238,309,287.99 - Step 5: Solve for x
x = 4,238,309,287.99/74,961.84 - Step 6: Final answer
x = 56,539.56
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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.