Finding the Fourth Proportional to 77,617.12, 107,038.92 and 61,754.08
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Solution
The fourth proportional to 77,617.12, 107,038.92 and 61,754.08 is: 85,162.78
Step by Step Solution
- Step 1: Write the proportion equation
77,617.12 : 107,038.92 = 61,754.08 : x - Step 2: Convert to fraction form
77,617.12/107,038.92 = 61,754.08/x - Step 3: Cross multiply
77,617.12x = 107,038.92 × 61,754.08 - Step 4: Simplify right side
77,617.12x = 6,610,090,028.79 - Step 5: Solve for x
x = 6,610,090,028.79/77,617.12 - Step 6: Final answer
x = 85,162.78
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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.