Home / 80,541,661.71-120,763,049.67-31,300,019.40

Finding the Fourth Proportional to 80,541,661.71, 120,763,049.67 and 31,300,019.40

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Solution

The fourth proportional to 80,541,661.71, 120,763,049.67 and 31,300,019.40 is: 46,930,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,541,661.71 : 120,763,049.67 = 31,300,019.40 : x
  2. Step 2: Convert to fraction form
    80,541,661.71/120,763,049.67 = 31,300,019.40/x
  3. Step 3: Cross multiply
    80,541,661.71x = 120,763,049.67 × 31,300,019.40
  4. Step 4: Simplify right side
    80,541,661.71x = 3,779,885,797,474,163.50
  5. Step 5: Solve for x
    x = 3,779,885,797,474,163.50/80,541,661.71
  6. Step 6: Final answer
    x = 46,930,814.65

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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.