Finding the Fourth Proportional to 102,064.74, 140,841.36 and 56,739.96
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Solution
The fourth proportional to 102,064.74, 140,841.36 and 56,739.96 is: 78,296.70
Step by Step Solution
- Step 1: Write the proportion equation
102,064.74 : 140,841.36 = 56,739.96 : x - Step 2: Convert to fraction form
102,064.74/140,841.36 = 56,739.96/x - Step 3: Cross multiply
102,064.74x = 140,841.36 × 56,739.96 - Step 4: Simplify right side
102,064.74x = 7,991,332,144.84 - Step 5: Solve for x
x = 7,991,332,144.84/102,064.74 - Step 6: Final answer
x = 78,296.70
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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.