Finding the Fourth Proportional to 77,610.15, 116,324.10 and 76,779.09
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Solution
The fourth proportional to 77,610.15, 116,324.10 and 76,779.09 is: 115,078.49
Step by Step Solution
- Step 1: Write the proportion equation
77,610.15 : 116,324.10 = 76,779.09 : x - Step 2: Convert to fraction form
77,610.15/116,324.10 = 76,779.09/x - Step 3: Cross multiply
77,610.15x = 116,324.10 × 76,779.09 - Step 4: Simplify right side
77,610.15x = 8,931,258,543.07 - Step 5: Solve for x
x = 8,931,258,543.07/77,610.15 - Step 6: Final answer
x = 115,078.49
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1.5x scale
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.