Finding the Fourth Proportional to 102,739.02, 141,779.43 and 57,416.99
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Solution
The fourth proportional to 102,739.02, 141,779.43 and 57,416.99 is: 79,235.21
Step by Step Solution
- Step 1: Write the proportion equation
102,739.02 : 141,779.43 = 57,416.99 : x - Step 2: Convert to fraction form
102,739.02/141,779.43 = 57,416.99/x - Step 3: Cross multiply
102,739.02x = 141,779.43 × 57,416.99 - Step 4: Simplify right side
102,739.02x = 8,140,547,405.62 - Step 5: Solve for x
x = 8,140,547,405.62/102,739.02 - Step 6: Final answer
x = 79,235.21
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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.