Finding the Fourth Proportional to 77,263.80, 115,895.70 and 49,615.80
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Solution
The fourth proportional to 77,263.80, 115,895.70 and 49,615.80 is: 74,423.70
Step by Step Solution
- Step 1: Write the proportion equation
77,263.80 : 115,895.70 = 49,615.80 : x - Step 2: Convert to fraction form
77,263.80/115,895.70 = 49,615.80/x - Step 3: Cross multiply
77,263.80x = 115,895.70 × 49,615.80 - Step 4: Simplify right side
77,263.80x = 5,750,257,872.06 - Step 5: Solve for x
x = 5,750,257,872.06/77,263.80 - Step 6: Final answer
x = 74,423.70
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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.