Finding the Fourth Proportional to 81,360.30, 122,149.80 and 51,908.70
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Solution
The fourth proportional to 81,360.30, 122,149.80 and 51,908.70 is: 77,932.82
Step by Step Solution
- Step 1: Write the proportion equation
81,360.30 : 122,149.80 = 51,908.70 : x - Step 2: Convert to fraction form
81,360.30/122,149.80 = 51,908.70/x - Step 3: Cross multiply
81,360.30x = 122,149.80 × 51,908.70 - Step 4: Simplify right side
81,360.30x = 6,340,637,323.26 - Step 5: Solve for x
x = 6,340,637,323.26/81,360.30 - Step 6: Final answer
x = 77,932.82
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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.