Finding the Fourth Proportional to 105,590.76, 145,717.11 and 57,840.99
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Solution
The fourth proportional to 105,590.76, 145,717.11 and 57,840.99 is: 79,821.59
Step by Step Solution
- Step 1: Write the proportion equation
105,590.76 : 145,717.11 = 57,840.99 : x - Step 2: Convert to fraction form
105,590.76/145,717.11 = 57,840.99/x - Step 3: Cross multiply
105,590.76x = 145,717.11 × 57,840.99 - Step 4: Simplify right side
105,590.76x = 8,428,421,902.34 - Step 5: Solve for x
x = 8,428,421,902.34/105,590.76 - Step 6: Final answer
x = 79,821.59
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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.