Finding the Fourth Proportional to 90,861,523.80, 136,292,285.70 and 55,029,715.80
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Solution
The fourth proportional to 90,861,523.80, 136,292,285.70 and 55,029,715.80 is: 82,544,573.70
Step by Step Solution
- Step 1: Write the proportion equation
90,861,523.80 : 136,292,285.70 = 55,029,715.80 : x - Step 2: Convert to fraction form
90,861,523.80/136,292,285.70 = 55,029,715.80/x - Step 3: Cross multiply
90,861,523.80x = 136,292,285.70 × 55,029,715.80 - Step 4: Simplify right side
90,861,523.80x = 7,500,125,747,803,403 - Step 5: Solve for x
x = 7,500,125,747,803,403/90,861,523.80 - Step 6: Final answer
x = 82,544,573.70
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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.