Finding the Fourth Proportional to 91,027.80, 136,541.70 and 51,661.80
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Solution
The fourth proportional to 91,027.80, 136,541.70 and 51,661.80 is: 77,492.70
Step by Step Solution
- Step 1: Write the proportion equation
91,027.80 : 136,541.70 = 51,661.80 : x - Step 2: Convert to fraction form
91,027.80/136,541.70 = 51,661.80/x - Step 3: Cross multiply
91,027.80x = 136,541.70 × 51,661.80 - Step 4: Simplify right side
91,027.80x = 7,053,989,997.06 - Step 5: Solve for x
x = 7,053,989,997.06/91,027.80 - Step 6: Final answer
x = 77,492.70
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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.