Finding the Fourth Proportional to 91,077.80, 136,616.70 and 51,711.80
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Solution
The fourth proportional to 91,077.80, 136,616.70 and 51,711.80 is: 77,567.70
Step by Step Solution
- Step 1: Write the proportion equation
91,077.80 : 136,616.70 = 51,711.80 : x - Step 2: Convert to fraction form
91,077.80/136,616.70 = 51,711.80/x - Step 3: Cross multiply
91,077.80x = 136,616.70 × 51,711.80 - Step 4: Simplify right side
91,077.80x = 7,064,695,467.06 - Step 5: Solve for x
x = 7,064,695,467.06/91,077.80 - Step 6: Final answer
x = 77,567.70
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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.