Finding the Fourth Proportional to 79,518,644.20, 119,277,966.30 and 39,207,860.20
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Solution
The fourth proportional to 79,518,644.20, 119,277,966.30 and 39,207,860.20 is: 58,811,790.30
Step by Step Solution
- Step 1: Write the proportion equation
79,518,644.20 : 119,277,966.30 = 39,207,860.20 : x - Step 2: Convert to fraction form
79,518,644.20/119,277,966.30 = 39,207,860.20/x - Step 3: Cross multiply
79,518,644.20x = 119,277,966.30 × 39,207,860.20 - Step 4: Simplify right side
79,518,644.20x = 4,676,633,827,630,711 - Step 5: Solve for x
x = 4,676,633,827,630,711/79,518,644.20 - Step 6: Final answer
x = 58,811,790.30
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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.