Finding the Fourth Proportional to 85,417,173,638.40, 128,163,981,052.80 and 38,864,488,684.80
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Solution
The fourth proportional to 85,417,173,638.40, 128,163,981,052.80 and 38,864,488,684.80 is: 58,314,123,252.45
Step by Step Solution
- Step 1: Write the proportion equation
85,417,173,638.40 : 128,163,981,052.80 = 38,864,488,684.80 : x - Step 2: Convert to fraction form
85,417,173,638.40/128,163,981,052.80 = 38,864,488,684.80/x - Step 3: Cross multiply
85,417,173,638.40x = 128,163,981,052.80 × 38,864,488,684.80 - Step 4: Simplify right side
85,417,173,638.40x = 4,981,027,591,425,467,875,328 - Step 5: Solve for x
x = 4,981,027,591,425,467,875,328/85,417,173,638.40 - Step 6: Final answer
x = 58,314,123,252.45
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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.