Home / 80,660,020.80-120,990,031.20-70,582,324.80

Finding the Fourth Proportional to 80,660,020.80, 120,990,031.20 and 70,582,324.80

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Solution

The fourth proportional to 80,660,020.80, 120,990,031.20 and 70,582,324.80 is: 105,873,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660,020.80 : 120,990,031.20 = 70,582,324.80 : x
  2. Step 2: Convert to fraction form
    80,660,020.80/120,990,031.20 = 70,582,324.80/x
  3. Step 3: Cross multiply
    80,660,020.80x = 120,990,031.20 × 70,582,324.80
  4. Step 4: Simplify right side
    80,660,020.80x = 8,539,757,679,720,534
  5. Step 5: Solve for x
    x = 8,539,757,679,720,534/80,660,020.80
  6. Step 6: Final answer
    x = 105,873,487.20

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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.