Finding the Fourth Proportional to 90,782,208,542.40, 136,173,312,813.60 and 48,987,987,691.20
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Solution
The fourth proportional to 90,782,208,542.40, 136,173,312,813.60 and 48,987,987,691.20 is: 73,481,981,536.80
Step by Step Solution
- Step 1: Write the proportion equation
90,782,208,542.40 : 136,173,312,813.60 = 48,987,987,691.20 : x - Step 2: Convert to fraction form
90,782,208,542.40/136,173,312,813.60 = 48,987,987,691.20/x - Step 3: Cross multiply
90,782,208,542.40x = 136,173,312,813.60 × 48,987,987,691.20 - Step 4: Simplify right side
90,782,208,542.40x = 6,670,856,571,982,564,032,512 - Step 5: Solve for x
x = 6,670,856,571,982,564,032,512/90,782,208,542.40 - Step 6: Final answer
x = 73,481,981,536.80
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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.