Finding the Fourth Proportional to 74,771,143.80, 112,156,715.70 and 40,758,919.80
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Solution
The fourth proportional to 74,771,143.80, 112,156,715.70 and 40,758,919.80 is: 61,138,379.70
Step by Step Solution
- Step 1: Write the proportion equation
74,771,143.80 : 112,156,715.70 = 40,758,919.80 : x - Step 2: Convert to fraction form
74,771,143.80/112,156,715.70 = 40,758,919.80/x - Step 3: Cross multiply
74,771,143.80x = 112,156,715.70 × 40,758,919.80 - Step 4: Simplify right side
74,771,143.80x = 4,571,386,580,247,701 - Step 5: Solve for x
x = 4,571,386,580,247,701/74,771,143.80 - Step 6: Final answer
x = 61,138,379.70
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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.